Maybe he should chop off both his arms to make sure his design is good.
After that his head would be the ultimate test!
Measure twice, cut once.
An interviewer recently asked Alice Cooper what a “shock rock” performer would have to do to shock an audience nowadays the way he shocked audiences in the ‘70’s. He replied, “ you really can’t shock people anymore. You would literally have to chop your arm off onstage. And you can only do that twice.”