1. a) Generally speaking, modern
Homo sapiens sapiens are not privy to the totality of "human history."
1. b,c) The nature of its "menifest[ation]" is irrelevant to its necessity.
Full Definition of MONEY
1 : something generally accepted as a medium of exchange, a measure of value, or a means of payment: as
a : officially coined or stamped metal currency
b : money of account
c : paper money
2. Money is a means to the eternization of possession. (See my forum signature for further details.)
The only absolute knowledge attainable by man is that life is meaningless.
3‒4. It does not aspire to purpose; therefor, it achieves sanity.