This is the true reason metric is better. A lot of people think it’s inherently better for various reasons: it’s decimal and it’s based on the constants of nature. While nice, that doesn’t make it a better system.
The reason it’s a better system is that there has only ever been one metre, there has only ever been one litre, there has only ever been one kilogram. If you use any metric unit there is no ambiguity, there has never been ambiguity and there never will be ambiguity. There’s just one system.
For the imperial system and all of its branches and predecessors, that’s just not the case. The foot has had different measures, the mile has had different measures, the fl oz still has different measures as you noted. You can speak to someone and say some measure, they hear your exact words and interpret it as some different measures.
That’s the real problem with imperial, and that’s why metric was invented.
captain_aggravated@sh.itjust.works 7 months ago
Teaspoons and tablespoons do the same thing. A US customary teaspoon (found very often in cooking recipes, a set of measuring spoons is extremely basic kit in an American kitchen) is something like 4.98mL, a tablespoon is 3 teaspoons. So you’ll find a lot of products especially medicines and such diluted for dosing at 5 and 15mL, to be extremely close to a tea- or tablespoon. Because if you need to give your child a dose of dimetapp at 3 in the morning and don’t have the little measuring cup that those come with, you’ve got your kitchen measuring spoons.
A fluid ounce is two tablespoons.