You are welcome to measure anything you want. I am only reporting the statistics of marriage. First marriages fail about 50% of the time, while second marriag

You are welcome to measure anything you want. I am only reporting the statistics of marriage. First marriages fail about 50% of the time, while second marriages fail in the 70% range. Therefore, people are, on average, worse at their second and subsequent marriages than their first. It is rather irritating to contemplate, but the average person does not get better at staying married with practice, at least for "practicing" marriages with different people. My point was that there exist skills (or goal oriented behavior, here the presumed goal being to stay married) that do not necessarily improve with "practice." Nothing else comes to mind, but I would be interested in other things that break the common notion of always getting better with "practice." Human beings are very complicated, and I can imagine other situations where practice does not make perfect. I remember reading some research about divorced people where many reported that they had underestimated the emotional devastation that they felt after the divorce, and that if they had known how hard it would be, they would have tried much harder to rebuild their marriage. As another off topic comment about how complicated people are, in marketing it is important to let people know that what you are selling is easy and quick and convenient and ... Except for one area, where it is critical to tell people how hard it will be and how much work they will have to do if they buy your product. And that field is body building. Body builders buy products that pitch how hard they will have to work and how much pain they will need to endure. Go figure.