All social theory is Invisible Pink Unicorns, because none of those ideal types actually exist. However, they help think about those invisible things, social facts, that often are more important than the visible and the obvious. Human psychology too can be understood in a similar way, by way of ideal types and theories (their veracity is gauged by their therapeutic effect). It's just as huge universe as the social one. However, even a better way to understand inner worlds is empirical, by directing your investigative gaze from the outside to the inside. There are many methods of doing that, definitely more surefire and empirical than many methodologies from social sciences at that. Kind of like Weberian Verstehen, only directed inwards.