It seems that we’re both fans of SI units. I’m not arguing against metrics. But you still have to know what the words mean, and to do that, you have to look them up. You can also look up fleebles if necessary.

And not to pick nits, but grams measure mass, not weight. Weight is newtons. A pound is 16 ounces, not 12. A lot of the measures, such as weights and volumes, use powers of two: 2, 4, 8, 16, 32, 63, 128.

It’s easy to get imperials confused. That’s why I’d rather call a pound about a half kilo in my head and be done with it.