burde være relativt lett å unngå i våre dager, men ifølge denne New York Times-artikkelen er det fremdeles forbløffende vanlig at forskere gjør samme jobb om igjen:

It may seem odd that scientists in the Internet age spend years on a line of research, even bet their careers on it, without having first determined that their mountain had not already been climbed. But Dr. Stigler said that scientists often are ignorant of the work being done by others in their field, and searches of scientific literature can be hard to conduct.