The sleeping bag problem

Today was one of those days that my brain seemed like it had the sleeping bag problem.

All day I tried to get the mental map of all the stuff I needed to do and the details of each task back into my head. At some point I had this mental map all loaded up in my brain and then I took the mental map out of the bag (ie. I wrote down or dumped the details somewhere outside my brain) and now that mental map doesn't want to go back in.

Ever had one of those days?