It's not only a question of qualifications, they're complaining about a quantity which is not measurable. The auction concluded with a certain maximum bid. Now

It's not only a question of qualifications, they're complaining about a quantity which is not measurable. The auction concluded with a certain maximum bid. Now prove to me there could have been a higher bid. You can't! We measured all the bids, and this one was the highest! EDIT: I'm sorry your honor but the halting problem is undecidable?