My "how do you know" was more directed at "I’d be just about as happy with 100 million as 500 million". I agree with the log part. Wouldn't we expect them to b

My "how do you know" was more directed at "I’d be just about as happy with 100 million as 500 million". I agree with the log part. Wouldn't we expect them to be happier with their wealth doubled more than twice?