It mixes knowns and unknowns. It only judges you based on the knowns. They probably require some minimum level of consensus to determine knowns as well. For i

It mixes knowns and unknowns. It only judges you based on the knowns. They probably require some minimum level of consensus to determine knowns as well. For instance NYPL’s “building inspector” crowdsourcing program accepts a piece of data as verified if it’s been checked by 3 or more participants and at least 75% of them are in agreement. If 75% hasn’t been reached, it will keep showing it to more participants until it is.