Over time, Theseus replaces parts of his ship. Eventually, he has replaced all of the parts. Is it still Thesus's ship?

In addition, what if you gathered the discarded parts from Theseus's ship and eventually used them to build a second ship? Would _that_ be Theseus's ship?

behavioral economists asked people to fold origami and then bid on their own creations. As expected, the subjects were consistently willing to pay more for their own folded paper creations. In fact, they were so enamored of their amateurish designs that they valued them as highly as origami made by experts.

An apparently scientific argument is said to be not even wrong if it is based on assumptions that are known to be incorrect, or alternatively, theories which cannot possibly be falsified or used to predict anything.