re: #283 Decatur Deb

Cool. Big chunks of my street urchin days were spent in Buhl Planetarium on the N side of Pittsburgh. Played tic tac toe against their vacuum tube analog telephone relay mechanical computer, and watched their Foucault pendulum knock over a lot of pegs.

historicpittsburgh.org

I remember playing against that Tic Tac Toe machine for an hour and finally learned how to draw against it.