Forget about the "10 year challenge" - be brave and put a video of you dancing 2 years ago! Looking back at my dancing even 6 months ago horrifies me every time. I see a footage of a robot looking just like me, trying to dance; moving his arms and legs without any smoothness or grace... oh, pardon me, no, he's NOT moving his arms!
I mean, the problem is not that I was dancing badly, it’s that I was convinced that I danced pretty well, and was happy with my groove, body movement... I considered myself a pretty cool dancer. That's the horror.
By the way, we should invent a time machine just for traveling a year into the future so we can check if everything we’re doing now is really as cool as we think it is. And we should focus on haircuts - I can’t think of anything that people are less rational about than a present haircut.