The more I work in prod, the more I realize how hard it is to do prob & stats right.
Splitting data is easy. Sampling data correctly is hard.
Writing metrics is easy. Understanding what metrics measure is hard.
Monitoring numbers is easy. Interpreting them is very, very hard.
Splitting data is easy. Sampling data correctly is hard.
Writing metrics is easy. Understanding what metrics measure is hard.
Monitoring numbers is easy. Interpreting them is very, very hard.