I clicked on this discussion and demonstration of the physics of a ball on a turntable. Though my capacity to absorb the new is limited these days, it's still interesting, just a phenomon--forget the equations.
It's an example of why I envy the young. There's so much material online to learn from these days. In the '40's and '50's there were books. Popular Mechanics might have been the magazine closest to some of the Youtube videos, but still miles and miles away. But with the visual examples and the ability to drill down into subjects, today's world is an autodidact's dream.
There might be tradeoffs--amid all the possibilities and attractions could an autodidact focus enough to contribute to knowledge, but still..
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