Tell me one thing

Eamon gave me a rare glimpse into the nature of the male mind. Not, as something was taking place for him, but so that I could better understand how and why men almost always say no first, and then amend that.
Well there are like two exceptions to the automatic no, but that's and entirely different story.

He told me that it's because they can't manage more than one thing at a time. and that they become inflexible when too much is thrown at them at once .
He kind of described it for men as an inverted triangle, with the narrow part in the foreground, and for women more like a flow chart or a checkerboard of events all taking place as once with some juggling and lion taming thrown in, while texting.