Shirts I've gotten comments on that I took as positive:
But I'm also quite certain that context matters. Family, polite old ladies, nerds (of varying extremes), and Chinese people tend to be the majority of people I interacted with once I got to eighth grade and my anti-idiot filters successfully limited my interactions with anyone else. (Nowadays it's just family, but I've gone into that elsewhere.) I'm sure an "Of course I care! That's why I'm calculating probabilities!" would get (mostly neutral or positive) reactions, but how that translates into real world applications I can only imagine (I physically cannot read body language and a non-negligible number of people might be artificially polite to me because of my eyes).
What are your best short witticisms, suitable for use on a t-shirt, bumper sticker, or similar location? Ideally something that might make someone reading it think, or get curious enough to ask about it. Simple in-group identification is fine too, though.
For context, therufs is spending today at the NC Maker Faire making t-shirts, and asked me for suggestions this morning. As I was still mostly asleep, I wasn't very helpful.