Falsehoods programmers believe

I hope you don't think this is for your benefit, cats and kittens.  I just want to be able to find it again.

I'm in love with these lists of "Falsehoods Programmers Believe About X." In case you haven't had pleasure, I've collected all the ones I know of here. If I missed any, let me know!

Falsehoods programmers believe about names

• People's names do not change
• People’s names have an order to them
• My system will never have to deal with names from China
• I can safely assume that this dictionary of bad words contains no people’s names in it
• People have names

Falsehoods programmers believe about time

• The time zone in which a program has to run will never change
• The system clock will never be set to a time that is in the distant past or the far future
• One minute on the system clock has exactly the same duration as one minute on any other clock
• A time stamp of sufficient precision can safely be considered unique
• The duration of one minute on the system clock would never be more than an hour

More falsehoods programmers believe about time

• The local time offset (from UTC) will not change during office hours.

• My software is only used internally/locally, so I don’t have to worry about timezones

• I can easily maintain a timezone list myself

• Time passes at the same speed on top of a mountain and at the bottom of a valley

And there's more, future self. The whole thing here.