It's a lot harder to replicate that secret sauce, than it is to replicate some animation engine.
It's a lot harder to replicate that secret sauce, than it is to replicate some animation engine.
Math teachers are usually stuck using symbols to communicate because not many mathematicians have 3b1b's skill at animating and so can't use the high-bandwidth visual medium like he does. A blackboard can't compete with a 3b1b video; and it isn't just because he thinks clearly, it is because an animation can get more bits of information through in a short period of time and works better with a students short term memory. His custom animation tool is more important than it seems - he can explain more clearly because of a slight-of-hand where he has a much wider communication channel to get his message across.
That being said, the barrier to entry is still high. I suspect any topic he hasn't already covered is going to need specialist knowledge to extend this program.
Mathematicians have been using blackboards and symbols for thousands of years, and its never been a hindrance. While its not as good as video, its more than adequate to explain things and if you still have issues, you can use the many mathematical modeling tools that have existed for years.
Also, many of his topics require in-depth knowledge in the first place and gloss over significant portions of detail because the problems are often specialized. These details are obscured through the many drawings and it gives the viewer a false sense of understanding without actually being able to do the math.
So you're left with a largely conceptual understanding without any syntheses understanding, because, at the end of the day, you have to produce a line by line derivation in order to be considered having understanding.
Of all of the math teachers I've had, only one tried to explain things in an understandable way the 3b1b does.
Most math teachers just follow a curriculum and hope repetition drills facts into the students head. 3b1b makes the relationships between systems clear.