I know I'm not completely stupid. There are some fairly complicated things that I understand fairly well. I made my living for roughly 40 years doing things with software that required a certain amount of intelligence. So why does my brain freeze up and refuse to process any financial information more complicated than figuring out a tip? And if any such information does go in one ear and pause and be understood for an instant, it quickly regathers its strength and flies straight out the other ear, leaving very little trace of its passage.
As my wife says about a number of things, it's weird.
It often seems to be the case in marriages that one spouse can and will and does handle the finances, while the other is incompetent and mostly oblivious. Fortunately, that is the case for me. Before we married she discovered that I had not balanced my checkbook for six months and promptly took it over. I've been content with this arrangement ever since. I've often wondered whether there is some providential psychological dynamic which generally insures a balance of that sort. God help those in marriages where both are like me, or where the incompetent one is not also oblivious but wants to be involved, and does not understand his or her limits.