I started out in physics, was interested in relativity and the like, but thought ahead to a career in physics and saw that folks were into string theory, which didn't really appeal to me, and I wasn't seeing how physics research was helping people today. I should have done more research into the field before leaving it, but, I went into physics and science education research and cognitive science. Ironically, a similar article like this one got me into cognitive science (before I even started college), an interview with Patricia Churchland by Bill Moyers.
For every profound truth we discover, there is an inane mystery we are yet to discover.
And we do know exactly how bicycles work. EXACTLY. This one is up there with the one about NASA spending millions on a space pen.