Got a visit from two of my kids this past weekend. It’s always good to see them. Sunday morning I found my 22 year old engineering student son standing proudly over an old broken oscillating fan that, for quite some time, has made a horrific grinding noise when turned on. The fan was now whirring perfectly. When I gave him an astonished look, he said, “Mom, you just don’t appreciate what a mechanical genius you have for a son!” I agreed, and left him there to figure out how to put the outer cage back on the fan. There followed much clanging, bumping, and muttering…then a shriek . He came rushing out of his room with blood dripping down his hand. My genius had stabbed himself with a screwdriver. I cannot count the number of times in his life I have had to tell this particular son NOT to get BLOOD on the carpet.