I'm sure there are a bazillion of these, and for me specifically it's always context dependent: what "bad vibes" have I gotten thus far? That said:

> What's the most popular editor?

often goes a long way for me. If it's "I'm a real developer, I use (ed|emacs|vim|a magnetized needle and a steady hand)" I know that inertia and egos are more important than leveraging the best tooling