Interesting theory on things only shrinking until they reach a "human size". Many things have shrunk: cell phones, thumb drives, wall warts, personal routers/a

Interesting theory on things only shrinking until they reach a "human size". Many things have shrunk: cell phones, thumb drives, wall warts, personal routers/access points, flash lights, inkjet printers… Some things can not successfully shrink: keyboards, displays… But there are very few things that have artificially resisted shrinking: Household telephones and credit cards come to mind. I think hard drives are a component. 3.5" will yield to 2.5" as each drive stores enough data. Smaller platters start to have diminishing returns. Before you know it the whole product will be over run by something solid state and no one will care what the last size of buggy whip was.