When Sheffield casts an opinion he speaks as a person giving a view.

That is not a historian speaking.

A historian collates, assesses and presents information. When he says the future would be x y or z he says it as a person and his view has no more weight than anyone else. After all, his work as a historian is to get such information presented so people can form their own views.

Only a moron would say otherwise eh Keith?

You really don't grasp this, do you?