I don’t really see why anyone should prefer giving money to random other survey takers rather than themselves or Yvain.
I’m unable to take the money, but think that there is value toward incentivizing both high survey returns and people taking the monetary prize question seriously, so cooperating was strongly more valuable.
I’m unable to take the money, but think that there is value toward incentivizing both high survey returns and people taking the monetary prize question seriously, so cooperating was strongly more valuable.
Your cooperation doesn’t actually incentivize high survey returns since no one knows whether you cooperate or defect.