The only reason they were there is because they were invited by a newbie track-leader who hadn't been informed of the difference between the two groups.

A lot of "traditional filkers" still wag their fingers and click their tongues at anyone who needs batteries to play their accompanyment. And they were all at FKO that weekend and couldn't make it.

What's the number of geek social fallacy where "all my friends should get along with each other"?