In 1969, a single 1202 alarm code nearly aborted Apollo 11 four minutes before Neil Armstrong touched down on the Moon — and the reason it fired comes down to a 27-year-old programmer making a brilliant, un-approved judgment call under four seconds of pressure. This week we dig into the forgotten story of Margaret Hamilton, priority interrupt queues, and what a lunar module computer the size of a carry-on bag can teach us about how software gets written under impossible stakes today.