The fractions don’t help me when I go to the grocery store and unit price of one bag of nuts is “per pound” and the unit price of another is “per ounce”. You’d better be good at dividing by 16 in your head if you want to price-compare! And you’d better be good at remembering how many fluid ounces are in a quart when you go to the olive oil aisle (hint: it’s not 16).
There’s nothing nice or consistent about those fractions. A third of one is one of the other, but a third of that is four of the other? Imperial units don’t convert in any meaningful or logical way, you have to memorise the conversions. With the metric system, it’s all tens.
And the fact that there are no usable units smaller than an inch and you have to use fractions should drive any craftsperson up the wall.
Imperial unit ratios tend to have a greater number of smaller factors, which makes fractions nicer. 1yd/3 = 1ft. 1ft/3 = 4in.
The fractions don’t help me when I go to the grocery store and unit price of one bag of nuts is “per pound” and the unit price of another is “per ounce”. You’d better be good at dividing by 16 in your head if you want to price-compare! And you’d better be good at remembering how many fluid ounces are in a quart when you go to the olive oil aisle (hint: it’s not 16).
There’s nothing nice or consistent about those fractions. A third of one is one of the other, but a third of that is four of the other? Imperial units don’t convert in any meaningful or logical way, you have to memorise the conversions. With the metric system, it’s all tens.
And the fact that there are no usable units smaller than an inch and you have to use fractions should drive any craftsperson up the wall.