Good knowledge is not given to consumers of knowledge.

https://gyazo.com/e17214d6ad5049994b8d025231c76f30

A: A system where you pay 1 cost and put in knowledge and get more than 1 social utility out of it.

B: A system that pays 1 cost to put knowledge into the system but produces less than 1 utility.

B's system needs to pay X for knowledge

For example, suppose X writes a book and mechanically reproduces about 30,000 copies of it, the recipient pays 3,000 yen, and 300 yen of that is distributed to X.

In this case, X weighs the effort of "writing a book" against the self-interest of "getting 9 million yen" and makes a decision

X is not interested in whether that knowledge helps B.

The onus is on B to determine that.

There are too many of them in the first place for me to keep an eye on them.

X is interested in whether that knowledge will help A.

Because usefulness is a requirement for "X to be efficiently altruistic"

---