Newb: Hey man, I think for this project I'll write my own SQL datastore from scratch. I've looked at a bunch of them and my project, which is basically an inventory management system, is such a special snowflake that it needs its own datastore.
Senior: That would be insane. Never do that. Use what's already out there, and is tried and tested. In fact, just use postgres and make it work.
Newb: Aw, ok. I was so much more excited about writing a new SQL datastore than I was about the actual project it's for, but sure, I'll just use postgres. starts to walk away...
Senior: Hold up a sec before you go, I want to run something by you. Because our discipline, which is basically a team of people who are hired to build things on a schedule, is such a special snowflake, I've invented this totally new way of thinking about work, and of organizing a team and leading it, and there's a bunch of new terminology and I have some cool diagrams... I'm lobbying that we all switch to this at the end of the month.