I'm sufficiently good at understanding everyday engineering including related mathematics. I have no clue about this things apart from concepts that's read here

I'm sufficiently good at understanding everyday engineering including related mathematics. I have no clue about this things apart from concepts that's read here and there. In half a century most of people with advanced knowledge will not be here, how do we are planning to pass on the understanding ? I think Khan academy for advance physics needed, or that would be too primitive to go deep enough ?