Comment by sowbug

If your self-esteem is sufficiently resilient, you can exploit the same human tendencies behind Cunningham's Law (the best way to get the right answer on the internet is not to ask a question; it's to post the wrong answer). Check your crappy end-to-end proof of concept into the team repository, and your teammates will be so horrified and outraged that they'll fix it faster than any sprint could have planned.