Some feedback on video lessons

This is an amazing platform that makes education equitable and accessible.  Hats off to the man and the team with this vision that has made it possible for learners of all ages to independently study diverse topics.

The only drawback as I see it, albeit a minor one, is if Sal Khan could stop echoing his words in his videos and/or refrain from making random comments this would be an even greater experience. for example "let me erase this here, or make this bigger" "sympatric speciation - s-y-m-p-aaa-tric---". Since this is not a classroom where continual interaction happens, this may serve to distract learners especially working adults who are trying to squeeze in a few hours of learning after a long workday!  Otherwise, great job, thank you for your vision and hard work!