Hey, I'm the guy who posted the answer. Why did I put so much effort into it? Well, 1) I'm really passionate about using science/technology to improve the state

Hey, I'm the guy who posted the answer. Why did I put so much effort into it? Well, 1) I'm really passionate about using science/technology to improve the state of math education (that's my job and my hobby and basically my whole life), and 2) I really disliked the original top answer, which was basically claiming there's no scientific insights teachers can use to improve their students' learning, something I know to be factually incorrect.