Here are three I’ve come up with:

Too much information. Geeks tend to over-share about the topics of their own obsessions.

The best is enemy of the good. Geeks often seek perfection, where non-geeks are more prepared to accept “good enough”. Lots of arguments occur around this.

Relevance mismatch. Geeks think some things (eg. how someone dresses) should be irrelevant, and largely disregard them. Non-geeks tend to place greater emphasis on personal grooming and dress codes. Conversely, non-geeks might think that something like desktop operating system is irrelevant, when it’s highly important to geeks. Either group will disregard what they consider “irrelevant”, not realising it’s relevant to the other party.

What other anti-patterns happen when geeks and non-geeks interact?