Oh yes, "...make it accessible..." That is code for "explain it to them like its Sesame Street." We already do that in education. We explain it, we give examples, we ask them if they understand it, we ask them if they have questions, we have group exercises...blah, blah, blah.
Some things require active thought, maybe even the capacity to think theoretically or abstractly. See, when we talk about "accessible" learning, then we are reall talking about passive, stepwise processes...linear thinking.
Getting back to losing our edge as a nation...the abstract and theoretical thought is what makes it happen. Or, if you want to go the China route and have a huge labor pool of linear thinking factory line workers...well, that doesn't command the salary and benefit packages that we pay to folks like in the US. We pay for that which we don't get.
The four year old...the child is ape-ing that which he/she sees on TV or hears on the radio or from a teacher. It is cute. It isn't anything more than cute.
What would say if your four year old said, "Mommy, what's a rim shot?" Would you say, "Oh, nifty! My child has a future in the porn industry! Quick, let me call grandma and tell her about my smart little kid!!" I doubt it. You would probably wonder where she heard that expression because Lord knows she didn't think that up in any abstract way.