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IIRC Grant formerly made videos for Khan Academy, and thus uses the same virtual-blackboard as Sal. However, Grant animates with a Python lib whereas Sal draws by hand.

Well, the best answer is to check for yourself! Here's his series of linear algebra videos for example:

https://youtube.com/playlist?list=PLZHQObOWTQDPD3MizzM2xVFit...

Absolutely. Khan Academy teaches unconnected facts in the way that US schools operate, but 3blue1brown aims for understanding.

On one hand I agree- the big picture stuff is better with 2blue1brown. On the other hand, as far as doing the actual exercises that make me better at solving problems, Kahn felt a lot better.

I personally value being able to solve random problems better, as it makes me feel like I know the material better when I can apply it, but I think rational folks could disagree.