[EDIT] A little more context for those who might not click on a rando youtube link: it's basically an entertaining, whirlwind tour of the philosophy of categorizing and labeling things, explaining various points of view on the topic, then poking holes in them or demonstrating their limitations.
https://www.youtube.com/watch?v=fXW-QjBsruE
Perhaps the desk is "chairing" in those moments.
[EDIT] A little more context for those who might not click on a rando youtube link: it's basically an entertaining, whirlwind tour of the philosophy of categorizing and labeling things, explaining various points of view on the topic, then poking holes in them or demonstrating their limitations.