When I was a junior developer fresh out of college, another junior and I noticed a bank sign with the temperature showing to be -0 degrees. We made a few commen

When I was a junior developer fresh out of college, another junior and I noticed a bank sign with the temperature showing to be -0 degrees. We made a few comments about Two's Complement and felt a bit smug in our superiority over the manufacturer of the sign. Decades later I read an article about how -0 degrees is a standard in civil meteorology for "below freezing but rounded up to zero". Though it took a while to learn, it was a good lesson in making assumptions about standards in other domains.