Well, personally, I believe in the definition of parkour, but there are some exceptions. I've seen people doing parkour, but I dont believe anyone does it specifically to get from point A to point B the fastest. I see lots of people kong vault and cat leap, etc. when they could've ran around something faster. Correct me if i'm wrong, but shouldn't we have a definition change? ***I STILL LOVE PARKOUR***
Let me remind you, in parkour, the entire idea is to set a goal we can never reach, so that we perpetually improve. The goal of going in a direct line, A to B, is nearly impossible. I mean, look anywhere, and if you just go straight, sooner or later, probably sooner, you'll reach something you can't go over, (or under or through or whatever). But that's the idea. We train ourselves so that one day we can run in a straight line to our destination, the quickest path with the most ease. Sure, today, that's impossible. But I bet that's what you said about a pop vault the first day you saw it.