Friday, July 20, 2012

What Should Children Do All Day?


They should learn. 


How and what should they learn? 
What have I learned from all this? That children love learning and are extremely good at it. On this matter I have no more doubts. . . . When they are following their own noses, learning what they are curious about, children go faster, cover more territory than we would ever think of trying to mark out for them, or make them cover. ~ John Holt, How Children Learn
It is, in fact, nothing short of a miracle that the modern methods of instruction have not yet entirely strangled the holy curiosity of inquiry; for this delicate little plant, aside from stimulation stands mainly in need of freedom; without this it goes to rack and ruin without fail... ...It is a very grave mistake to think that the engagement of seeing and searching can be promoted by means of coercion and a sense of duty. ~ Albert Einstein 
According to John Holt and Albert Einstein, curiosity should be the guiding factor in how Learning happens. 
The keys to [learning] are study environment, study habits, course of study, and high quality books. The goal of our home schools should be to teach our children to think - and to think faster and better than we, ourselves do. The student who masters a subject on his own learns more. ~ Dr. Art Robinson
According to Dr. Robinson, training for independent thinking should be the guiding factor in how Learning happens.
Unschooling is a range of educational philosophies and practices centered on allowing children to learn through their natural life experiences, including play, game play, household responsibilities, work experience, and social interaction, rather than through a more traditional school curriculum. Wikipedia 
According to the Unschooling philosophy, learning should happen by the child's choice in everyday experiences such as games, work, and social interactions. 


What other definitions are there for what and how children should learn?


What do you believe are the guiding factors in what and how children learn? 


How are they different for adults? 


~vbb

Thursday, April 19, 2012

But what about . . .


But what about their socialization?
Maybe what someone is really asking when they ask this unavoidable question about home schooling is, “What on earth do you do all day?”

What do children do all day? What should they do?

Sit at a desk? Attend lessons and clubs? Dig? Make grocery lists? Read? Talk to neighbors? Build? Work with dad? Write? Play sports? Color? Act? Compose? Practice? Complete worksheets?

And how does a parent decide what their children should be doing? How does a child participate in this decision? What role does society and community play in how this question is answered?

~vbb

Wednesday, March 21, 2012

FOUND: What’s up with ‘Schooling’?


Lincoln's schooling was so slight as to be almost nil. He did not grow up in a literary atmosphere. But in the matter of his official utterances he must be compared with the ablest geniuses and most cultured scholars that have preceded him, and not merely with his early associates.

How does someone become a genius without ‘schooling’? And do we have a word that describes the kind of education Lincoln went through that made him as great as he was?

Through close observation and student interviews, we found that students failed to engage in the coursework and spent little to no time studying. Students were disengaged from their learning responsibilities and the derailing of their studying began as early as elementary school.

David Castillo and Peter McIntosh, Khan Academy: Learning Habits vs. Content Delivery in STEM Education

How do students become disengaged at school? And how is society changing this trend?

According to Castillo and McIntosh, “Improving content delivery helped, but not enough” and “Poor learning habits revealed the core problem”. “When we stopped worrying about whether Khan Academy videos were better than our own lectures or whether the exercises had the appropriate mix of concept vs. drill, we recognized that we had found a powerful tool that reached students and changed their habits in ways we had never even considered possible.”

It sounds like they have found principles that will help Learners Drive their Education. So, how are Khan Academy videos changing learning habits? The authors list the following aspects of Khan videos that influenced this change:
  • “Most exercises are not multiple-choice, which eliminates guessing.
  • Questions are randomly generated, which eliminates copying
  • The short video clips engaged students and allowed them to replay the material until they understood it; and
  • The online environment and Khan Academy’s overall design appeals to the students, resulting in significant engagement time.”
I’ve known about Khan Academy for a while, but I haven’t taken the time to really investigate it for Learner Driven Education principles. What else in our society is changing ‘schooling’ into something that is Learner Driven? And how are they doing it? How do we let go of worrying about 'content delivery' in order to find what really helps students succeed? What helps the student rise above his environment to greatness like that of Lincoln?

~vbb

Thursday, March 1, 2012

FOUND - Reasons to Stop

I'm just finishing up a study of Abraham Lincoln's life through Henry Ketcham's autobiography. Two posts about education in schools have me making some interesting connections between our battle today to reform education and the battle of Lincoln's time to conquer slavery.

Cevin Soling frames his perspective on education in clearly 'good vs evil' terms in his essay "Why Schools Must Be Abolished".

Seth Godin also unequivocally declares war on the current school system in his latest (and free) ebook entitled Stop Stealing Dreams. He addresses this topic from the perspective of our children's dreams and goals and how education has not but must foster them to fit the needs of our changing economy.

Both adamantly call for radical changes in how we view and do education, changes reminiscent of the call and efforts to abolish slavery.


What similarities and differences do you see between our challenge today and the challenge of Lincoln's generation?

Wednesday, February 22, 2012

FOUND – Learning through Landscapes


Sometimes you find something and you think, “Hey! That totally fits what we’ve been talking about on the Leaner Driven Education blog!!” If that ever happens to you, please share it in a comment on the Learning Experiences tab above. Some of them we'll put into a FOUND post.

I’ll start.

My husband is a landscape architect, and in our family we love exploring new parks (and criticizing the flow of parking lots—weird huh?). We particularly love a great play ground. Here’s a picture of one of our favorite play grounds here in China.
The Chinese love to use cool rocks in their landscaping.
One of my favorite blogs is Playscapes. In her post, Natural Playground Inspiration from Learning through Landscapes, Arcady shared information about playgrounds that promote outdoor learning and play in natural play spaces. Here's one of the videos that she shared:



In LDE language, these play spaces do a wonderful job of creating learning experiences based on a child’s need to explore and create in open ended, physically demanding and challenging ways.

What I LOVE about these play grounds is how they have used largely materials that can easily be found in their environment/community. Did they consult experts in creating these playgrounds? Yes. But experts and parents and teachers were not the driving force, the children were. Did they take a chance? Yes! What I saw, however, was that the environment they created did such a good job helping the children to explore and create in open ended, physically demanding and challenging ways that the risks and problems that are found in other play spaces were almost nonexistent. And the rich environment naturally led to play that built upon the lessons they were doing in the classroom.
~What kinds of landscapes do you, or someone close to you, enjoy playing in?
~What do you have in your learning environment and community that will give your Learner a place to explore and create in open ended, physically (or otherwise) demanding and challenging ways? (and just for play ground type learning)
~vbb

Tuesday, February 21, 2012

Context Sketch: English Classes for Chinese Kids


OK, so (also) for over a month now I’ve been carrying around a rough draft of a Context Sketch for the English classes we teach here in China. Given that it’s a ‘sketch’, I had a great start on it in an outline format. However, that format wasn’t entirely working for me. One of my goals with these sketches is to show that anyone, with or without ‘teacher training’, can teach. Hopefully this format will help all of us feel more confident in our efforts and help us gaina clear picture ofwhat we’re doing: what we’re doing well and the next best step(s) to take. And most importantly, I’m hoping this format will give us the piece and confidence to take those steps, to be the Learners driving our education to be great Prime Learners. (This feels a little bit like the cat chasing his tail, but hopefully you get the idea.)

So here’s my pioneering post for Context Sketches:

Context Sketch: English Classes for Chinese Kids in Shanghai, China

Learners
The students are Chinese kids who live, primarily, in my housing complex here in Shanghai, China. Their ages range from 6-9 years, and they are mostly female. Because of where they live and my experiences in the first 8 week class, I am making the following assumptions: These kids are Chinese Nationals (citizens) and are relatively well-to-do. They have been public schooled, which means lots of memorization and not so much real free play time.

Prime Learners
~The primary instructor is me, Verena. I generally hate ‘teaching’ because I see today’s definition of ‘teaching’ as overwhelmingly uninspiring and incredibly unenlightened. I gladly ‘failed’ in a private class to ‘prepare’ a 10 year old for an English test. I want things to be REAL, and I prefer quiet one-on-one time with the students. I feel stressed about meeting parental needs and requirements, although I enjoy the financial boost to the family budget as well as the connection with Chinese nationals in the complex that these classes offer the family.
~My TA is my daughter, Ema. She’s a typically inexperienced teenager who loves kids and teaching. She doesn’t like dumb ideas for teaching, and definitely has an opinion about the lesson plans. She also enjoys the opportunity to earn money.
~My assistants are my other children who choose to participate. They love playing with the students, though they are cautious around Chinese people, especially adults.
~I also include the parents here as prime learners. They also influence the Learners in addition to learning from this experience along with their children. They have a public school, conveyor belt mind set which means education is memorization and test driven.

Learning Experience Needs
I’m using ‘needs’ rather than ‘goals’ because it fits with the basic LDE Principles. I think they also help Prime Learners take a fresh look at their roles. ‘Needs’ should not be equated with ‘demands’, however.

The Primary Shared Need is to facilitate English language learning. Sub Needs are to facilitate learning to connect with and enjoy the company of friends who don’t speak the same language and come from very different cultures and to facilitate learning by connecting new ideas with personal interests and by seeking quality not conformity.

As the Prime Learner seeking to design learning experiences, my needs have been to answer the following questions:
How will students want (feel inspired) to learn English?
What activities will help them feel confident and successful as they figure out how to learn and use English?
What activities and/or contexts will help them want to learn English?
How do we optimize those activities and/or contexts?

Contexts
We teach these in the living and dining room of our home. We primarily use the resources we have as an English speaking home schooling family and our computer, the internet, and a printer. We also obtained a white board from some friends. We divide each class into 4 sections, under which I will discuss some of the activities we have used.

Welcome: We have a warm up activity which is usually tossing balloons around or blowing a ping pong ball around a table. Then we sing our Hello Song which has been modified from the LDS Primary Children’s Songbook. We also introduce each other and the target vocabulary for the day usually by allowing the Learners to express their opinions in relation to the new words by repeating some variation of “I like . . . What do you like?” and “I don’t like . . . What don’t you like?”

Singing time: We’ve used a variety of common children’s songs and also many non-religious ones from LDS Primary Children’s Songbook. We found singing to be rather exhausting, so we began limiting our singing to just 2-3 songs. Some of our favorites are “The Wheels on the Bus” (which my 6 year old son leads), “I’m a Little Tea Pot”, “Head, Shoulders, Knees, and Toes”, and “Do as I’m Doing”. These songs give the Learners a chance to hear English words, act them out, and then say them when they are ready.

Story time: Learners each choose a story for us to read. We use the children’s books we have on hand for this. We don’t have access to a library here in China. I’ve been amazed at how much the Learners appear to enjoy this despite some of their very limited English abilities. (Maybe I’m just witnessing good school training?) We do have a few students with more English abilities and this allows us to meet their needs as well. Some of the books are very simple board books (“Brown Bear, Brown Bear” by Eric Carle and “Red Hat Green Hat” by Sandra Boynton), in which case we read the book together in chorus. We tried ‘going on a bear hunt’ but we never found a version that we liked very well. We try to have some free time toward the end of class, and I’ve found some of the Learners going back to these books to look at them. The books we brought are classics for our family, and hopefully they are also inspiring our English students.

Vocabulary time: I usually put together a coloring sheet with the vocabulary words on it and a place for them to write the word. Then we try to do some sort of activity to help them remember the vocabulary words. The favorite is to assign each word a number and then we roll the dice and act out the corresponding word. For my advanced Learners, I include a place for them to use the vocabulary words in open ended sentences.

Game time: The first advice I got from others about these classes was to play Uno. We didn’t like it. Their language skills weren’t good enough. We have since successfully rotated through playing memory using I Spy cards, assembling puzzles, doing more coloring pages, and playing ‘closer and too far’ to find objects hidden in the room. Playing simple games that are very easy for them to understand feels like the best way to help them learn simple English phrases.

Next challenges:
Provide opportunities where they need to use simple English phrases.
Find ways to review vocabulary from past classes.
Figure out how to keep things fresh and interesting even though we’ve already used the most obvious vocabulary lists and most of our family’s resources for books and games.
Help the children better understand the books and songs that we’ve been using for a while.

Saturday, February 4, 2012

Context Sketches


I started this post almost a month ago, but my opening quote scared me enough that I hit a wall:
 We won't meet the needs for more and better higher education until professors become designers of learning experiences and not teachers. Larry D. Spence
I really do love this quote, but when it came to actually applying it, to talking about what I was doing to design learning experiences I felt completely and utterly inadequate. Then last night during our English class, a few more pieces connected for me in this journey to re-frame Learning and Education. The connecting piece can be summed up with a question:
 Where is the proper dividing line between what people can do for themselves or with the help of friends and family, and what they require professional help for?
Dr. Michel Odent The De-Medicalization of Childbirth
One of my goals with this blog is to help create a world where Learners seek the very best context and the very best Primer Learners to help them reach their goals. I also want to help Learners and Primer Learners foster effective learning contexts where Learners Drive their own Education. There are so many experts out there with so many different theories about how to optimize learning, and Dr Odent’s question reminded me that if we spend too much time worrying about how to apply what the experts are teaching us, very few of us will actually put in the effort to create learning experiences for the Learners we have the opportunity to impact.

With that introduction, I’d like to introduce Context Sketch posts to this blog.

Soon after starting this blog I began looking at my situation from the perspective of Context. How do all of the Contexts in a given learning situation influence the Learner and their drive for Education? How can a Prime Learner help Learners to use these contexts to meet their immediate and long term needs? I am anxious that LDE be a place for discussing how those factors work together and how a Prime Learner can create valuable learning experiences that will help a learner meet their needs. Context Sketches will be posts where Prime Learners can learn from the experience of others and gain the confidence to step outside of dominate definitions of teaching and into that of creating learning experiences, or in other words, facilitating a Context that will help your Learners Drive their own Education.

The first one we’ll do is my English Classes for Chinese kids here in China. Stay tuned!!! Also, I hope you’ll start thinking of ideas for future Context Studies. Post them in a comment on the Learning Experiences page of this blog.

~vbb

P.S. While some of us may fit the definition of an educational Professional, I hope we can learn from each other as we would friends. Besides, I find it highly unlikely that anyone could be more of an expert on your learning Contexts than You!

Saturday, January 21, 2012

Pulling It All Together – Loose Ends

I’ve left some loose ends in previous posts. So in order to go back and tie them up, let’s first review some thoughts from  What Drives a Learner:

I would suggest that a learner is driven by the realization that fulfilling their needs depends upon some action on their part.

A Learner is
someone who is actively looking to fill a need.
If that’s the case, what needs are they trying to fill?
I would suggest that 
a Learner is basically looking to meet
~ immediate needs
~ long term needs

The next question is:
What influences
~       the immediate and long term needs they are seeking to meet and fill?
~       the kinds of actions that are needed to meet and fill those?

This obviously begs the question: Are all actions learning? Unfortunately that question will have to wait until my next post titled, very cleverly, What is Education?

Except I didn’t answer this question.

So, is someone who is working to meet either immediate or long term needs always learning? NO. 
Insanity is doing the same thing, over and over again, but expecting different results. -Albert Einstein

To be learning, someone must be either
~       validating something already learned and/or
~       learning something new.

Next, in the What is Education? Part 2 – Redefining Education and Learning post we find another loose end:

So society’s definition of education is based upon learners seeking some sort of societal approval through accepted actions in order to participate in and be rewarded by society.

Compare that to the LDE definition of Education which is based on learners processing their context and then acting within that context in order to meet long and short term needs.

But while the processes and evidence of education are described, Education isn’t actually defined.

So here we go:

Education is the ability to skillfully use a wide range of contexts to successfully meet immediate and long term needs.

There, that's better.
~vbb

Friday, January 6, 2012

Revisiting ‘The Case Against Teaching’: A Confession

I really hate teaching, and I hate baby talk. Until I wrote yesterday’s post I never realized how much I hate teaching. I’ve suspected it, mind you, but I’ve never confronted it like I am now.

But I do love learning. I love it a lot. I love sharing my learning with others, and I love sharing in the learning of others.

I’m fascinated by the contexts Spence used for learning Chemistry. What were they?
~       the relationships with his friend Billy, his teacher, and ???
~       physical contexts including the basement, the library, the furnace room, the classroom, and ???
~       time and freedom to experiment, though still within a safe range
~       and ???—Are there other contexts in Spence’s article that caught your attention?

Another reason I’m currently confronting how much I hate teaching has been a growing frustration with the English classes our family teaches here in our home in China. We’re almost to the end of our first 8 week, bi-weekly group class for 6 - 9 year olds. I love these kids, but I’m still trying to decide, or rather, gear myself up for another 8 weeks. The question foremost in my mind is, “How can I optimize a context that facilitates learning and loving English?” Included in that context is fulfilling the expectations of Chinese parents who, first of all pay for the classes, and secondly, know mostly “that teaching is telling, learning is absorbing, and knowledge is subject-matter content.” There are no easy answers to this one, but it’s an example of the type of shift that needs to be made in Education.


Another example of this shift away from the dreaded ‘teaching’ can be found in a recent article by Oliver and Rachel DeMille entitled, “5 Things Effective TJEd Families Never Say”. I’ve read enough from the DeMille naysayers to feel vindicated as well as inspired by their no-nonsense answer to “the 5 things we’ve learned that…

Effective TJEders don’t say:
  • “The TJEd system is strong on educational philosophy, but it doesn’t really help with application.”
  • “TJEd is good for literature and history, but not math or science.”
  • “TJEd seems great, but how do you actually do it?”
  • “If I don’t force and require my child to study, won’t he just do nothing?”
  • “I read classics in high school and college, so right now I want to just focus on the kids’ education.””
The history of ethics teaches that the most determined hostility against the best is the good, not the bad. Henry Ketcham, The Life of Abraham Lincoln

While I’m perfectly aware that all of us are human and no model, system, philosophy, or otherwise is going to meet everyone’s needs, I honestly believe that the reason so many struggle with the Thomas Jefferson Education philosophy and educational applications can be found in our struggle as a society to learn, "It's not the teaching, it's the learning, stupid."

The answer is simple and yet so profound: Become a Prime Learner by reading classics. “Those who have read 10 classics in the last year, 5 great math and science classics, 4 classics aloud with the kids, and 7 classics with a specific mentee in mind, etc., rarely ask such questions—because they don’t typically have these problems or concerns. . . . TJEd works when we do TJEd. TJEd works when we—as parents and teachers—read classics and share what we learn. TJEd works when we are studying the classics, and then passionately passing on what we’ve studied. If we don’t actually do TJEd, it doesn’t really work that well. . . . Fortunately, the great classics are on the shelves! We only have to pick them up and go to work… That feeling of “secure, not stressed,” that makes us feel like our education is flourishing—because it is—is just 20 minutes away. And it is so fun. So grab a classic, find a couch, and get that feeling of success flowing!”

The concept of a Classic needs another blog post, but I’m excited to let go of my need to be a Teacher and just be an inspired-by-classics Prime Learner. Does anyone have any suggestions of classics that would assist us in teaching English here in China? (BTW, sharing religious texts here in China is against the law, so those classics will only be able to inspire me.)


And I’ll second this from the DeMilles: You have permission to read a book.

I really do believe that’s the very best cure for teaching.


~vbb

The Case Against Teaching



In my quest to understand how Education can be Learner Driven, I hope to look at books, articles, and experiences in my life, community, and around the world in light of LDE principles. While I realize that the best way to discuss something is when everyone else has read the entire text as well, my hope is that these posts in and of themselves will be enlightening, inspiring, and a great opportunity to ask the questions that will lead to further enlightenment and inspirations.

The first text I wanted to discuss was the article that really sparked the direction for LDE entitled “The Case Against Teaching”. This is a speech that was delivered by Professor Larry Spence of Penn State, given in 2001 at Chautuaqua.

As a spoiler for those who haven’t read it, Spence is really bucking a system, or in other words the business of education, that puts teaching first, rather than learning. This begs the question for me of “Why haven’t Learners fought this?” I think there could be lots of answers to this question, (and I would really love to hear your answers!) but my response is that Factories, which it could be argued provides the model for the current educational system, don’t teach their Product to have a role in its own production. This is an important reason why this article spoke to me. Not only do we need to teach Prime Learners how to better facilitate Learners driving their education, but we also need to train and build confidence in Learners so they can speak for themselves and what their intuition tells them. We also need to train them so that they can confidently use the most effective tools to Drive their Education.

Anyway, so here’s the first quote from this article for us to look at:

Why is education more resistant to innovation than business, agriculture, or communication? Because parents, reporters, citizens, children, politicians, and professional educators share an unshakable image of what teachers and students are supposed to do. A common machinery of schooling prevails from kindergarten through corporate training programs. And these accepted arrangements and practices are what we think a "real" school, a "real" university, or a "real" training program ought to look like. Its assumptions are that teaching is telling, learning is absorbing, and knowledge is subject-matter content.

Given that Education is such a hot topic and with so very many people discussion so many solutions to the ‘problem of education’, I find it ironic that the problem could really be a uniformity and stubbornness of thought.

But the question now is what can Prime Learners do to really help Learners drive their own education in a confident and effective way?

Spence focuses his thoughts primarily on understanding how Learners learn. He gives us two examples of learning (and teaching).

First Example:
We are born to teach. Like speech, teaching is an instinctive and unconscious human ability. Listen to a grownup talk to a baby.  . . . Researchers like Alison Gopnik and her colleagues tell us that "motherese” like this is a universal phenomenon (see Resources).  . . . "Motherese" is just one example of the way we respond automatically to children's need to learn about language objects, rules, and about the multiple and complex nuances of the cultures that they must master in order to survive. In such situations, human beings seem to be unconscious teachers. Adults function as tools that children use on an as-needed basis to solve particular learning problems. Researchers who watch parents with babies remark on all adults' instinctive ability to give children just the information they need to progress.

It seems to me that somehow in this learning situation, we’ve been able to trust our instincts. It makes me wonder what we could learn here about how to help Learners in other situations as well. I’ll address this more later, but a situation that comes to mind, particularly since we currently live in a foreign country, is that of learning a foreign language. What can we learn from ‘Motherese’ that would help Learners and Primer Learners facilitate learning a foreign language?

Second Example: (yeah, this is long, but it’s sooo good!)

Learning begins with curiosity. I was curious about how to make an explosion and I started with what I knew. I knew gunpowder exploded and that it was in my dad's .22-caliber shells. Billy and I began by collecting and taking .22 shells apart. The dangerous process was long and morally destructive. Then, one sleepless night, I remembered castaway pirates used charcoal to make gunpowder. The next step seemed obvious. I went to the library determined to find a recipe for gunpowder.
 . . .
Notice how quickly Billy and I began experimenting. We actually failed our way to large and satisfying blasts. Researchers now know that even babies start out with complex models or theories of reality. Like scientists, they predict. When their predictions fail, they change their models. Children, as Roger Schank points out, are failure machines—and that makes them powerful learners (see Resources'). Watch children. Their play is a form of inquiry and questioning. They expect results and when they don't happen, they question and revise their actions and expectations.
 . . .
The findings of cognitive science contradict the notion that the mind registers reality like a tape recorder or a camera, and that learning is merely absorption. Instead, the mind builds mental constructions that help us order experience. The brain represents rather than records reality. Even sight is an act of construction and depends as much on brain processes as on the actual world it seeks to represent. Like an artist, the brain selects, discounting most signals, and seeking constancies that make up our image of the world. From sound and light waves combined with previous models, it constructs information like: “The cat is eating a mouse." And it creates knowledge like “Cats eat mice" that can be used later to predict and control.

Learning is an active process of making changes in the mind’s representations by reasoning about the world-not just taking it as it comes. Learning means breaking, making and remolding connections in our brains.

The idea that the brain represents rather than records is pretty appealing to me. I’m sure there are exceptions to this. I’m know there are individuals whose brain really does record, but I know mine doesn’t like to. I do memorize things, but I only do it occasionally when I REALLY feel motivated to.

If “Learning means breaking, making and remolding connections in our brains”, what does that mean for Prime Learners? How can Learners use that to make the most of learning opportunities? And what about children as ‘failure machines’? If we really saw learning as a process of failing A LOT, how would that change how Learners approached Education?

Spence’s final thought reminds me of a quote from Dr Robert Bradley’s Husband-Coached Childbirth: The Bradley Method of Natural Childbirth, “An obstetrician should have a big rear end and the good sense to sit calmly thereupon and let nature take its course.”

Our future lies in creating educational environments and experiences that will support our inborn human desire and ability to learn by doing.  . . . There are too many students, too few teachers, and too little money for traditional institutions to survive unless they reinvent their operations. We are hovering on the edge of a transformation of undergraduate education from a practice based on habits, hearsay, and traditions to a science-based practice—similar to the transformation of medicine in the 20th century. I'm convinced that we will be successful. But only if we remember the motto that has guided my work in the last decade: "It's not the teaching, it's the learning, stupid."

What does it mean to you to put the Learning, rather than the teaching, first?

~vbb

P.S. The full text of Spence's article can be found at: The Case Against Teaching
Also, a cool abbreviated video version of this talk can be found on YouTube.