In case anyone doesn't feel like clicking on the link let me summarize:
Whoa, climbing is like, hard. And now, with more people, more training and more knowledge, like, the number grades are totally going up. Sort of like skateboarding, Wolfgang Gullich is totally like Tony Hawk, both are gnar. In the future people will climb V20 and 5.16, it'll be rad. But you know what, grades are kinda subjective, like somebody tall might find something easier than somebody who is short, weird huh? But everybody is different and that's cool and we should all like, just go climbing and love it.