Recently I was working on a set of homework problems and couldn't figure out the last problem. I just didn't understand how to put the data into the equation I had. So after working on the problem for quite a long time I called a friend and asked her how she did the problem. She pointed out that I was using the wrong equation. Looking back over the problem it seemed so obvious. As we've talking about before I had hindsight bias when I was thinking that however, it should have been easier than I made it. I was so stuck in my mental set of using a specific equation that I never even considered using a different equation. Oddly enough I can't think of how I could have avoided this. It almost seems like my professor wanted us to get stuck and be challenged! Is there something I could have done differently? Simply doing the problems backwards doesn't seem like it would always solve the problem of forming mental sets. My best guess would be to work with a group of people. It is far less likely that you would fall prey to the obstacles of problem solving if you work with other people. However, in group settings sometimes if one person makes a mistake it's easy to be blinded by it because of a group mentality. I feel like there are pros and cons to the solution of working in a group to avoid making errors in problem solving.