Diana Drumm sends us another review from Cannes... 

A promising premise and captivating performances fall flat as a philosophy professor leaps after a misguided notion of the philosophical imperative, tumbling after one of his own theoreticals to disastrous results. Like much of Allen’s lesser filmography, Irrational Man dabbles in some of the auteur’s favorite subjects (philosophy, middle-aged male crisis, May-December or in this case June-November romances) and takes on more than it can chew, choking up in the third act.

The film’s tone shifts with the stumbled abandon of a dizzied drunk trying to make up his mind whether to stand or stay seated, from murky to light to dark, sprawling discussions to tensed farce...