re: Metric system: Yea or Nay?

Yes definitely. Also an engineer. Imperial is awful, especially for scaling. A mile is 1,760 yards, a yard is 3 feet, a foot is 12 inches. These numbers are clunky and difficult to convert and would have an adverse effect on young children picking them up from the world around them. Metric is far easier to learn and implement at a young age, and a solid foundation and early confidence are everything in math.

Science and healthcare have long since abandoned that clunky holdover from a bygone era. Time for the rest of us to follow suit.