It mistakes the majority view for the traditional view. It presupposes the truth of Professor Vallejo's claims. It confuses inadequate evidence for truth with evidence for falsity. It fails to provide criteria for determining adequate historical evidence.
Student: The publications of Professor Vallejo on the origins of glassblowing have reopened the debate among historians over whether glassblowing originated in Egypt or elsewhere. If Professor Vallejo is correct, there is insufficient evidence for claiming, as most historians have done for many years, that glassblowing began in Egypt. So, despite the fact that the traditional view is still maintained by the majority of historians, if Professor Vallejo is correct, we must conclude that glassblowing originated elsewhere.
Which one of the following is an error in the student's reasoning?