In a nutshell: humans learn, live, and eventually succeed via a simple try-fail-try-again process.

If you can't suck, you can't fail. If you can't fail, you can't learn, you can't progress.

In most corporate places, you're not allowed to fail. Most will refuse changes, even if it's for the better, because, it may suck. It may fail.

So yeah. If you wanna be great, you gotta suck.