So we are told. By Edison over movies, then closed-circuit tv, then use of computers and now online learning.
This is a great video which does a good summing up at the end.
Learning is, and has always been, about connections. How a student makes the connections in his/her brain to what is being said to now being embedded in their brains.
But most of all, it is the ability of one person - a teacher - to get those students to a place of learning.
So the next time Bill Gates (or anybody for that matters) says, "this will change learning," you can just smile.