Fahrenheit takes human error into account by being less precise.

If you round up or down while reading the temperature, then there is no difference between your use of Celsius and my use of Fahrenheit. Alpha claimed that Fahrenheit is a confusing temperature scale, but I see no confusion in 32 being freezing, and a temperature range of 0 to 100.

I see confusion in the temperature range -17.7778 to 37.7778, however, which is the literal Celsius equivalent of 0 to 100 degrees Fahrenheit.