Clearly, you are smarter than the rest of us.
I guess you skipped over this one.
Let me give you an example of real life. I have a friend who is a collector. Like many private collectors, he is very personal about what he collects. He talks to almost no one about his collection or his collecting habits. He let it slip out one day in our often brief but frequent "conversations" that he figured he had quite a few more comics than I did (seeing my garage, which is about 75% of my collection.) He said he had more boxes than I did, but that all of his were long boxes - which puts his collection at about 90,000 or so comics (probably higher.) From our conversations, which frankly I enjoy very much, I have discovered he knows very little about what we here, call the "marketplace." I am sure that each of you know someone like this, as I have known several (as in many) eclectic collectors. How on Earth do you not acknowledge and account for these collectors and their collections?