"In many ways, the Apollo Guidance Computer was half the IBM PC XT you could buy off the shelf just a decade or so later. What's so incredible about that? The part that blew me away when reading up on the AGC wasn't so much the hardware, as the software they wrote to exploit it."
The first time, it's a KLUDGE! The second, a trick. Later, it's a well-established technique! -- Mike Broido, Intermetrics