I've heard so ads say this quote:
Do what you can't!
But later I'm thinking doesn't
Try what you can't?
make more sense?
In my thought how can you say Do what you can't when you can't do it, if you CAN do it then the sentence doesn't makes sense, am I right?
If you look at Try what you can't, it looks more fine because you're encouraging somebody to try something new.
What do you think?
Am I correct with my view?
Also, is "Do what you can't" really a good sentence?