Reading my old Usenet postings has brought up the old saying that I’ve forgotten more than I know. It seems that there was once this young female programmer who understood Macintosh Apple Events and Microsoft DDE, used something called VROOOM Overlays (a memory manager for DOS programs), and knew the difference between resistive, capacitive, and inductive digitizers used in pen computers. But she couldn’t figure out how to install RAM on a Powerbook 500 or get her cat to stop chewing on plastic bags so I suppose she didn’t know everything.