What I really like about Khan Academy is that Sal takes away all the magic. The limit as x approaches 0 of sinx/x isn't 1 because "that's the formula," it's because (insert Sal's 15 minute proof showing the graphs and allowing you to intuit the result).
In contrast, I just watched the first two lessons of this series and so far it feels like a lot of magic. It's just a "rule" of strictly dominated strategies that each of player 2's middle column values are larger than their end column values, so we can eliminate the whole column. Why is this? What do those values represent?
For anyone who has watched more of the videos, does the series improve in this regard?
When I started making the videos back in 2009, my concern was just showing how to solve games. Details were details, especially since your average YouTube viewer does not have much an attention spam that lasts past five minutes.
But you're right, the other things are important. I eventually get to them in some of the later (and longer) videos, I talk about them in the textbook. The first lesson is a free PDF on my academic website wjspaniel.wordpress.com, so you can check it out if you are interested.
Comments
What I really like about Khan Academy is that Sal takes away all the magic. The limit as x approaches 0 of sinx/x isn't 1 because "that's the formula," it's because (insert Sal's 15 minute proof showing the graphs and allowing you to intuit the result).
In contrast, I just watched the first two lessons of this series and so far it feels like a lot of magic. It's just a "rule" of strictly dominated strategies that each of player 2's middle column values are larger than their end column values, so we can eliminate the whole column. Why is this? What do those values represent?
For anyone who has watched more of the videos, does the series improve in this regard?
When I started making the videos back in 2009, my concern was just showing how to solve games. Details were details, especially since your average YouTube viewer does not have much an attention spam that lasts past five minutes.
But you're right, the other things are important. I eventually get to them in some of the later (and longer) videos, I talk about them in the textbook. The first lesson is a free PDF on my academic website wjspaniel.wordpress.com, so you can check it out if you are interested.
Thanks for the feedback.
William