Fahrenheit has finer granularity without fractions.
IOW each Celsius degree is bigger than each Fahrenheit degree.
Even though the F numbers are so much higher and it seems unbearably hot :)
So for a thermostat that only can be set in 1 degree increments (without a decimal point), you have finer control when using F than using C.
Anybody can memorize the conversion more easily by throwing out the math, using table lookup -- made easier by throwing out most of the table too.
Just remember every 5 C equals a non-fractional F.
And every 5 C equals 9 F.
If all you are interested in is comfort level it's like this:
C F
0 32
5 41
10 50
15 59
20 68
25 77
30 86
35 95
40 104
Least significant digit of F drops by 1 every time without fail.Looks like it increases by 1 each time in the tens column, but it's only 9 so 50 & 59 are the outliers, which most people have memorized already.
If you are a Celsius native and you think in terms of 10, 15, 20, 25, 30 -- you only need to remember 5 different F numbers, 50, 59, 68, 77 & 86 and that will get you far.
Good luck using these as your lottery numbers ;)
