Playtesting: do it honestly, do it early, do it often.
When your profession empowers you to design literally just about anything, it’s easy to rationalize just about any game design decision. Hell, I somehow managed to rationalize that our new power up for Tilt to Live have a screeching hawk sound effect. Bad idea? You’ll have to wait and see. When Adam and I are working on design details for how a particular system or game mechanic will work, we bring a lot of assumptions to the table of how we think people think....