https://www.youtube.com/watch?v=D9awDBUQvr4
At 6:50 the isolation in the unit tests is never going to come close to the complexity of the production data
At 9:15 he quotes from working effectively with legacy code in the characterization test process section. He sees gold master tests as being similar to characterization tests.
At 11:05 eight characterization test is not a black box test
At 11:45 he has a definition for what a gold master test is.
At 14 the ideal candidate for gold master Tess is mature, complex, and unlikely to change.
At 1505 gold master test patches and platform specific issue more quickly that unit four test. At 1525 useful for forensic analysis, can use get bisect with it easily.
At 2240 very specifically a regression test.