The very wealthy don't have liquid and easily-appraised assets. Calculating the total wealth of someone who owns art, jewelry, real-estate, historical artifacts

The very wealthy don't have liquid and easily-appraised assets. Calculating the total wealth of someone who owns art, jewelry, real-estate, historical artifacts, animals, and fractions of many international businesses is impossible. The idea that the wealthy can just print off a report from their TDAmeritrade account and turn it into the government is laughable. Even they don't have any real idea how much wealth they have.