system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Why is Black Panther considered the world's richest person at a net worth of 90.7 trillion dollars when vibranium isn't at all a liquid asset, and turning his vibranium completely into cash would be economically impossible and render it worthless?
gpt
None of the world's richest people keep their assets liquid. If you make that a requirement, it will completely change the list.

 It's possible that the 90.7 trillion was calculated by finding the present value of if he keeps selling it at the optimal rate and estimating how much that changes its value. Or it might have been calculated by multiplying the current value by the amount significantly overestimating its true value, but taking all that into account he's still likely the richest.