I'll try to figure something out in my head and it's good until I need to work something out in "another" part of my brain. Once I've figured it out and need to go back to the original problem, it's gone, no idea of what it was. I don't know if this is age (84) or something else.

I'll try to figure something out in my head and it's good until I need to work something out in "another" part of my brain. Once I've figured it out and need to go back to the original problem, it's gone, no idea of what it was. I don't know if this is age (84) or something else.