Interesting. Just like I think the Jazz are actually better than they are.
Does this argue money buys happiness? Since they have synthesized happiness by owning the painting (even tho they didn't purchase it) it seems to make them enjoy it even more. Or does synthesized happiness not count?
Well it's a given that they get a free painting (i.e., either it's #3 or #4) so that's a mute point. It's how they feel about the painting they received (#3) and the painting they discarded (#4) afterwards that matters.
This links back to his earlier data between the lottery winner vs the paraplegics, their happiness 1 year after the event are the same, i.e., the paraplegics had somehow found "synthesised happiness" within his own conditions/environment/situation.