Proof BTTF is the best movie of all time (Destiny)
Golden age humanity's records have been wiped out, but somehow Cayde has a copy of Back to the Future to make a reference? Proof it is indeed the greatest film ever made.
Proof BTTF is the best movie of all time
It's also possible that Destiny is set in the BTTF universe, and Cayde is/was Marty McFly, just resurrected as an exo and then also resurrected as an exo/Guardian, however that actually works. Probably.