What do you think is the best way to most accurately know who a person REALLY is?

Time tells all, if... you walk through some trials and tribulation together. Most can fake it if there's nothing to test the metal of the friendship. Also, you gotta put yourself out there. You're not gonna learn jack squat about anyone from behind a guarded heart. You've got nothing to lose and quite possibly everything to gain by venturing outside your comfort zone. Nothing great was ever achieved by playing it safe.