Indeed, and I see plenty of reasons to listen to him. Khan Academy helped me immensely in college for free and Sal Khan has been at it for what, 17 years now?
I'm pretty sure he has a better than average grasp on what it means to learn and how to improve the process. And even more importantly, he's trying to! If not him, then who should we listen to?
I don't have a clue why GP reduces Sal to "good at explaining things" when Khan Academy is so much bigger than just him for a long time now. And I, for one, am very grateful that he exists. People in first world countries can't imagine the impact that free access to great education resources has in the rest of the world, like in my case.
> At the gym, people assume anyone with big muscles must be an expert in medicine. Let's not make the same mistake here.
The gym analogy falls short to me. The mistake here is assuming that someone that worked in education for almost two decades, and has achieved extraordinary results in the mean time, doesn't have any clue about education in general.