Not one iota! Well, maybe a jot.

iota / ai-o-dê / noun1. The ninth letter of the Greek alphabet, equivalent to a short [i].
2. A jot, a tittle, a wee bit, a very, very small amount.Linguist Robert Beard: The name of the smallest letter in the Greek alphabet has become our word for the smallest imaginable thing in general. It sounds a bit odd in English, so it has not developed a derivational family. A rather odd abstract noun,