Dan Elton comments on I have thousands of copies of HPMOR in Russian. How to use them with the most impact?

[Dan Elton]

Best practice is to always define acronyms before using them!

[david_reinstein]

True but in EA (Effective Altruism) for people based in the USA (United States of America) this can sometimes be OK (Ohwall Korrect) to skip it.