Significance of the post - This is a list of common characteristics that Jeff has seen in people he considers to be geniuses. Maybe it is possible that if us normal people adopt these characteristics into our own identity, we might be able to achieve genius status as well.
As far as the details you get into about the constantly changing mind, the solution changing rapidly, and focus on self supporting details, I think you have made a mis-step with the idea of a rapidly changing solution.
If there is a correct solution to a problem, it will never change. Our understanding of the solution can change, the problem could change which would require a new solution. But the correct solution (again assuming one exists) to a set problem can not change.
When he is talking of this changing mind, he is referring to a human's natural process to build it's understanding of our environment, or some problem space, on previous data and conclusions. The problem that most people have is they accept their many previous conclusions as fact, so they are unable to see problem from the correct perspective, because that perspective would require some previous belief to be wrong, thus they never consider that correct perspective. A good example here would be a creationists inability to come to correct scientific conclusions because they believe the world is only a few thousand years old. Bill Nye!
But the worst kind of person to be if you desire to reach genius status is one that searches for validation of their beliefs over truth. Most of us have this in us, I know I do even though I think of myself as open minded. The best example for this would be for you to go out and debate a friend with opposing political views. At some point you will find yourself defending something that you don't fully understand, your friend will make a valid point, and this little asshole inside you will tell you to defy his point at all costs. But you won't, because you started this conversation searching for truth over validation, and then you will consciously understand the desire to search for validation.