My older son is just like me, except for the ways that he isn't. In those cases he is exactly the opposite of me. Kind of like a mirror image, or my evil twin, or maybe I'm his evil twin from another era. In any case where I am enthralled with all things mechanical, he is absorbed with words and music. We were talking about this the other day and he mentioned that my interests were arcane and when I inquired which subject he was referring to, he replied "all". I was a little taken aback. I thought all of the subjects I find fascinating would fall under the classification of "useful", I mean if you ever needed to rebuild our great industrial empire from scratch, I think I have pretty good handle on most of the knowledge you would need. Of course, that is unlikely to happen, but sometimes a bit of my arcane knowledge comes in handy for fixing things around the house, like a broken toilet. On the other hand, with our thoroughly interconnected and thoroughly interdependent society, you don't really need to know any of this stuff. All you need to do is be able to talk to other people and you can quickly locate someone who does have the requisite knowledge.
Anyway, due to my continuous collection of arcane knowledge, my brain might be full. The battery on my camera died, so I plugged the camera into the USB cable thinking it would recharge. I mean it did this the last time it died, so it ought to do it again, right? Except it didn't. I left it plugged in for a couple of days, you know, just in case it was really slow, but it didn't help. Well, fine, I've got a charger for my old camera, maybe I can use it on this battery (even though they are different sizes, maybe the contacts have the same layout), so I reach in the drawer where I keep the battery charger and out comes a battery charger for this camera. Where the devil did that come from? I don't remember this thing. It must have come with the camera, I mean it says Lumix right on the front, and this camera is only the Lumix thing I own, so it must have come with the camera, but I had completely forgotten about it. Huh. I wonder if there are any good pictures on the camera. I guess we will find out.
3 weeks ago