An econolog’s bio indicates:

Seldon’s radicality allowed him to extend market analysis in directions that were new. He understood that price was a vital signal between producer and consumer – sometimes literally. When in 1964 he almost died because of a shortage of (unpriced) blood in the hospital where he had undergone an operation, he commissioned an IEA publication called The Price of Blood which argued that altruism had failed and that blood should be exchanged in the market like any other scarce economic good.(ref)

Notice his reaction. To publish a paper that suggested that blood should be put into the market. It had. And since the organization believed in PRICE it wouldn’t exchange until it new the PRICE… Meaning he almost died (don’t really know this but the bio so asserts) because the MARKET (BEAD) GAME required the players to know a price to bill. They weren’t prepared to act until … well , fortunately for Selcon, they did act even without the price.