One of the oldest physical things proving man's intelligence is tools, and when we find them on archaeological digs we then attribute a certain amount of cleverness to whatever tribe's bones we found them under. I am fascinated by modern tool design. Now that adjustable wrenches, sheetrock screws and power drills have been long established, modern tool design largely revolves around making existing tools faster, more efficient, and/or safer, like the Eurekazone cutting system or the Kreg Pocket