I was going to say something similar. If whiteboard coding is a skill distinct from any you'd use after hiring, how useful is it as a filter? To a certain exten

I was going to say something similar. If whiteboard coding is a skill distinct from any you'd use after hiring, how useful is it as a filter? To a certain extent it's a sucker filter, selecting for people who are willing to invest time in learning a skill they know is just for show. Older workers tend to resist such things, because they've seen where it leads in other more important circumstances. That itself is valuable knowledge, and whiteboard interviewing selects against it.