Principle: People should buy an expensive antique only if they can be confident of its authenticity and they find the piece desirable for its intrinsic qualities and not just for its value as an investment
Application: Matilde should not buy the expensive antique vase offered for sale on the Internet
Although the seller is willing to take back the vase if Matilde cannot independently authenticate it, Matilde is not sure that the vase will appreciate much in value in the future.