Agree, on construction screws, philips just doesnt cut it. As far as the metric system, they gave the basics in high school science and I said, why bother. Here came the Army, meters, kilos and such. My farm boy mind was locked into feet, yards, quarter mile and miles. How many meters is that private? Yeah, mentally going from 1,000 ft to yards to 29 inch long meters, no fun when adjusting artillery fire. Then they switched to meter maps, too coarse of measurements, we had guys getting lost because small hills did not show up, that are plain on a feet measured map. Then the auto industry jumped to the metric system, oh yeah, go buy some wrenches, sockets, even adjustable wrenches, no kidding still got them. My metric all lives in one drawer, they never got along with the SAE. Do not blame them.