Okay, I guess as someone with hard-won expertise I'm duty-bound to take slight exception to this line:
Put a backpack on and you can walk into any building at any university in the United States any time you want.
First, the nitpicking: Technically you can't get into Harvard's excellent libraries without actually (a) being a Harvard student, or (b) working for Harvard. (And if you're a programmer, I'm not sure which of those options is going to prove more expensive.) But, of course, the rest of Harvard is open to the backpack-wearer, and MIT even opens their libraries (I'm proud to routinely impersonate a graduate of MIT) so this isn't much of an objection.
On a slightly more serious note: They also won't let you into the labs with just a backpack. If you'd happily accept a sub-market wage to be taught laboratory research techniques, in a piecemeal and haphazard fashion, by sleep-deprived world experts equipped with state-of-the-artish equipment, engineering graduate school is the game for you. And I did kind of enjoy working in the lab, just not enough to keep that as a career. It's not that great a career; you have to love it to stick with it forever.
Now, having said that, I cannot re-emphasize this line enough:
After you’ve escaped the mind-warping miasma of academia, you might rightfully question whether Published In A Journal is really personally or societally significant as opposed to close approximations like Wrote A Blog Post And Showed It To Smart People.
All my journal publications mean nothing compared to the stuff I've scrawled in the margins here at HN.