Wacky Weds: Who needs flashing?

Hey it’s a bay window way up on the second floor with a 2′ overhang above it, why install flashing??? Heh lets just install shingles on it.

Funny thing, the only trade in this state that requires licensing & testing is roofers…

Want to do it right, know how it should be? Getting the details right: 4 roof flashing errors to avoid