Call me an extremist but killing a few hundred million people seems like the sort of method that might have unintended consequences. - James Nicoll

There's a rule I used to call The Niven Rule but which I just now have decided to call the Rusting Bridges rule. It came to me after reading Niven's “All The Bridges Rusting.” In this story, humans have by the early 21st century explored the Solar System and sent not just one but two crewed ships to Alpha Centauri ... despite which the characters moan endlessly about the dire state of the space program. “Eyes of Amber” would be another example of the Rusting Bridges [Rule]: No matter how much the space program you actually have has achieved, whether it's first contact with aliens or trips to nearby stars, it can never have achieved as much as the space programs you can imagine would have achieved in its place, given that imaginary programs aren't limited by issues of politics, funding, or engineering.

[H]umans hate to admit error even as they stand there, black and smoldering, with the stub of a cigarette in one hand, in the middle of a wide crater containing them and the remains of a sign that once read 'DANGER: VOLATILE EXPLOSIVES'

The sharp side of the knife goes away from you. Pure reason does not trump brute force but suprisingly few people know what hot peppers look like when the teacher asks if you have enough to share with everyone. Never take the lid of a pressure cooker 'to see if it's done yet'. Even if you are careful with the picric acid that won't matter if you are careless with other items next to it. Move *away* from mysterious burglar alarms. Do not append 'you moron' to exposition directed at people who have just broken into your building. 'We need to talk' is overwhelmingly unlikely to precede good news. A rough brick wall may be used to sort socks or as a backdrop for sock-art (The Neglected Art). A silent cat is Up to Something. Lungs are unsuited for many possible atmospheres, including that of London, and anything with a high content of industrial cleaners. Youth will not save you from Newton's Laws. Or Darwin's.