The "War for Talent" model$/$theory rests on three important assumptions. The fact that Toyota was able to change the worst quality GM plant into one of the best in the world casts doubt on which of the assumptions?

Organizational performance is the simple aggregation of all of the individual performances

People can be reliably sorted into better and worse based on their abilities and competence

Individual ability is fixed and not variable. There are better and worse people

An excellent manager can perform well in any industry