scott a écrit :
>> Imperial measurements are generally based on humans, so it's pretty 
>> convenient for everyday usage.
> 
> So long as you don't need to convert between units or do any 
> calculations. Buying carpet was one example, another is when you tell me 
> you weigh X pounds and I usually deal with stones, I have no clue 
> whether that's a lot! Or if you measure someones height with a tape 
> measure marked in inches, what's that in feet? Or if you are following a 
> recipe that calls for 10 oz of flour and you want to make 4x the 
> quantity for a party, how much flour do you weigh out if your scale is 
> in pounds and ounces?  These calculations may seem relatively simple if 
> you're good at mental arithmetic, but people who aren't struggle (all of 
> the ones above I've witnessed at least once).
> 
>> Metric has the advantage that you don't get into weird problems with 
>> units when you do science.
> 
> Yes, it's very odd looking through an imperial science text book where 
> every formula has some bizarre constant like 537.4 in it!
> 
> 

Is it really any weirder than 273.15?

Likewise, I don't think 9.81 is a more convenient constant than 32.2!

My biggest beef with the imperial units is that I usually screw up the 
16th and 32nds marks on my measuring tape and end up cutting my planks 
just a little too short.  It is much harder to mix up the cm and mm lines.

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