I forgot to mention another thing about our timeline. “Metrication” in Canada only started officially at the government level in 1970. The scientific community used it long before that but definitely not the average citizen and not the government. It will take several generations to finally get rid of it here, if ever. Cuz ‘Murica next door.
https://en.m.wikipedia.org/wiki/Metrication_in_Canada
If you really want to hear something sad… we buy butter in bricks of 453g which are actually just 1lb bricks that were relabeled. Same goes for jugs of certain liquids. There’s no such thing as a 4L jug of milk or juice or even motor oil. We have 1gal jugs that are labeled and contain 3.79L of product.