text_a: yet another iteration of what 's become one of the movies ' creepiest conventions , in which the developmentally disabled are portrayed with almost supernatural powers to humble , teach and ultimately redeem their mentally `` superior '' friends , family ...
text_b: while easier to sit through than most of jaglom 's self-conscious and gratingly irritating films , it 's still tainted by cliches , painful improbability and murky points .