Comments

Laptop chargers: great. They should be 12 V, so instead of supplying a charger, hotels etc could just provide a 12 V outlet. Which would also work with 12 V devices made for your car or off-grid house. One standard for low-voltage DC power. Batteries: there is a pretty big difference in the capacity of AA and AAA batteries, and AA is the single most common battery type. Doesn't make sense to kill AA. (Maybe get rid of AAA in favor of N, though?) We probably don't need both C and D anymore, one of those could go. The real place to simplify is button batteries, there are scores of types which could usefully be distilled into 2-3. Shoe size: I'm not so sure, when I compare shoes I often find the shape is different, not just the length. Since feet are not standardized (I blame the manufacturer!), I would hate to have shoes standardized to a foot shape that doesn't happen to fit me. On the other hand, clothes seem to vary even in the sizes which are supposed to be measurements. If I buy clothes with a 38" waist, how hard is that to actually live up to? Apparently pretty darn hard. I find that, even in the same brand, same type, same color, the waist and inseam may be off by as much as an inch. I don't think clothes need 0.001% precision, but 2-3% error seems a little high. Computer ink: sure, but that's their business model. Will never, ever happen.