This same 'fraud' exists in lots of social situations where someone offers to 'pay the remainder of a bill' or 'I'll top up your sponsorship to $1000'. Classic

This same 'fraud' exists in lots of social situations where someone offers to 'pay the remainder of a bill' or 'I'll top up your sponsorship to $1000'. Classic restaurant example:. "I saw that table gave you a 1 cent tip, so I'm going to tip you double". It's more of a social problem than a mathematical one. Either it's okay to reward someone inversely based on their past successes, or it isn't. "Do the best you can, and I'll pay the rest" is exactly that.