"They'll stop going to the company picnic if it becomes an occasion for everyone to list all the computer problems they never bothered to mention before."
I think a more explanatory description would be, a nerd is somebody who is primarily interested in technical questions. That predisposes nerds to avoid ambiguity - but by no means excludes nerds like literature professors, who are absolutely obsessed with ambiguity.
It's generally a better idea to categorise people by priorities, as opposed to preferences - since preferences tend to be very variable.
I think Geeks are the literature/pop culture equivalent of nerds. Whereas nerds deal with more scientific obsessions Geeks deal with more cultural obsessions.
Here's a Nerd/Dweeb/Geek Venn diagram.
For real though...
Funny, the inverse world.
These are probably different peaks in the spectrum.
Unfortunately, this truth runs counter to people who want to control everyone... or at least predict.
The description of the anti-nerd would completely fall apart in Asian culture for instance.