Comment by jonplackett
5 months ago
Adding the milk second is colder.
The bigger the temp difference the more cooling. So by putting the milk in right away you make the temp difference between the surroundings and the coffee smaller = less cooling over your 2 mins.
I like puzzles with a satisfying answer
Parent is complaining about being technically hotter because the time the temperature is read for logging is at 120seconds.
I notice this on HN more than places like reddit and Mastodon.
I think it's a benefit when writing requirements and programming to specs. It's less of a benefit when having a freeform discussion.