Switching between system 1 and system 2: The nature of competing intuitions and the role of disfluency.

This commentary identifies two problems concerning the switch mechanism: The model explains too few instances of switching, and the switching mechanism itself seems fallible. The improvements we suggest are to clarify the nature of the competing intuitions as the initial intuition and its negation or alternative ways to solve the problem, and to incorporate cognitive disfluency into the switching mechanism.