The last days I made some slow progress in the sorting-of-screws-project. Sorting-of-screws-project? Kerstin and I are currently tidying up our small storage room and a multitude of screws showed up during this tidying up. I think I have now about 20 different categories of screws lying at the table besides the keyboard I am typing on right now. Some of these categories should be merged, I think. Especially those with less than five specimen total. At the end of this process, the world will be a much better place.