I have a T-Shirt with the Pioneer Plaque drawing and I sometimes go out of my way to wear it when I know I’ll be meeting new people. To most people, it’s just a nice drawing, and is filtered out quickly. A few that do recognize it always make a comment, and it’s a great conversation starter. Would definitely recommend something like that.
I also have a few nerdy ones like you mentioned, but the “nerd and proud of it” can be perceived as obnoxious, so I try not to wear them in settings where that is likely to happen.
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