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I'm pretty sure this is already being done en mass.

Are you familar with Khan Academy? https://en.wikipedia.org/wiki/Khan_Academy

There's been tons of work on this. https://en.wikipedia.org/wiki/Educational_technology#Practic...

etc...

There's always going to be competition in whatever field you are playing in. Especially technology, which is the most competitive field in the world. Google was launched despite there being lots of other search engines before that.

Sure, but Google had some special sauce that no one else had.

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