Comment by selcuka

> why do we default to believing that there are suddenly two types of people

Because we know that there are already more than two types of people, even when we ignore aphantasia? So there is nothing new here.

Also if you read the FA, it explains that there are objective differences:

> People have taken various physiological and behavioral tests in a research lab. Researchers have observed that people who report vivid imagery respond differently to these more objective measures than aphantasics. Although this doesn't let us know definitively that they vividly see an image, it all points to the fact that something is truly different between people who claim to see vividly and those who don't.