Why? Because we have collapsed the spectrum.
Consider the “mere-exposure effect”: You like people simply because you have seen them before. That’s why office romances happen. That’s why you eventually befriend the weird guy in the building lobby. people you know to people you don't
Ultimately, everyone you know was once a person you didn’t. Your spouse was a stranger. Your best friend was a face in a crowded room. The mentor who changed your life was just a name on a syllabus. people you know to people you don't