It's rarely used, I'm not aware of a specific definition for it. This question defines it somewhat: https://stackoverflow.com/questions/312003/what-is-the-most

It's rarely used, I'm not aware of a specific definition for it. This question defines it somewhat: https://stackoverflow.com/questions/312003/what-is-the-most-ridiculous-pessimization-youve-seen/687309 https://stackoverflow.com/questions/312003/what-is-the-most-... It's still kind of tongue-in-cheek because it hasn't caught on enough. I think it's used more widely in ML but I may be way off the mark on this.