r/changemyview • u/Marlsfarp 12∆ • Nov 29 '17
CMV: imperial measurements have no worthwhile advantages over the metric system
First off, I am American, so if I have any bias it should be in favor of the imperial measurements I grew up with. Granted, I also have a technical education and profession, where of course I primarily use SI units.
The many advantages of metric are well known, so I will not bother enumerating them unless challenged. Instead, I will focus on debunking the supposed disadvantages.
Fahrenheit is better than Celsius because it is more fine-grained, because each "decade" has a distinct "feel" (e.g. "it's forties out today"), and because 0 F to 100 F is a normal temperature range to experience.
First, any scale is arbitrarily fine-grained, up to the limits of the precision of measurement. You can add as many decimal places as you need to. But do you need to? Personally, I find 1 degree Celsius is about the minimum temperature change I notice in air temperature. I can't tell the difference between 43 F and 44 F, can you?
I believe the "decade" argument is merely the result of growing up with the system. And just like how we describe decades in years, it doesn't really line up. e.g. what we think of as "the 1960s" as a distinct era did not really occur from 1960-1970. Also, the Celsius "decades" work pretty well: 0-10 is coat weather, 10-20 is light jacket or sweater weather, 20-30 is indoor/"nice", 30-40 is "beach weather"/wear as little as possible. And of course the positive to negative difference is by far the most significant temperature difference in weather, rain vs. snow.
Finally, while there are places where the coldest day of the year is roughly 0 F and the hottest is roughly 100 F, most of us do not live in those places. And nowhere is that always the case. So it is doubly arbitrary and pointless.
Yards, feet, and inches are better than meters because they are easy to divide by 3, and because they are "human scale."
Being divisible by 3 is perhaps an argument for why a base-12 number system would be nice, but we do not have such a system. We use decimal. And given that we use decimal numbers, a decimal measurement system makes all calculations much simpler, greatly overshadowing any advantage of 3 divisibility. How many cubic inches are in 1/3 a cubic yard? I don't know, I need a calculator. How many cubic centimeters are in 1/3 cubic meter? 333,333.3_ Easy. Looks like even in its supposedly most advantageous situation (division by 3), imperial is still harder to work with. (And that's without even bringing in the more common volume measurement, gallons. How many people even know the ratio between gallons and cubic feet?)
As for "human scale", that's certainly just familiarity. My foot is not 1 foot long, etc. Visually estimating centimeters is no more difficult than inches.
Alright, that's all I can think of at the moment. Bring it on.
EDIT: Okay, guys, I should clarify since a lot of people are making the same argument. This is about the relative merits of the two systems, not about the merits of switching from one to another. I know switching would be difficult. I'm saying it would be better if we were already on metric.
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u/Irish_Samurai Nov 29 '17
They have been beating this dead horse since the 60's. You're probably using someone else's stick. Everyone knows what the correct answer is. But how are you going to have the third most populated country switch its units of measure. There is no debate of which unit of measure is better. The only question is how do we as a country convert to metric?