[diffeomorphism]

Sure, but having wildly different conventions would be even more confusing.

In any case, I am very disappointed with HN for this thread. While I also think "actual time" would have been a more useful standard, words mean what they mean and the comment quality is ...

- "Hey, surely everyone is lying, instead of me misunderstanding a common convention."

- "That universal convention used since forever is dumb. Me complaining to you surely is going to retroactively change this in every publication ever."

- "How dare you tell me that I misunderstood something. I am sure you are personally responsible for that convention."

- "Of course a butterfly is made out of butter, it is right there in the name you moron!"