There's something a little interesting in the measure zero observation; we've run into it in a couple places too. For instance: we now do voice calls ahead of our last hiring exercise (it's a little bit counterintuitive and needs some prep) because no matter how carefully we wrote about it, even with highly motivated candidates (many of whom we statistically end up hiring!) nothing we write seems to sink in. We have an API quirk that works the same way, too.

There should be a name for the effect.