tldr; Fahrenheit maps the subjective feeling of very cold to very hot to a scale from 0 to 100. Celsius on the other hand gives you additional information abou

tldr; Fahrenheit maps the subjective feeling of very cold to very hot to a scale from 0 to 100. Celsius on the other hand gives you additional information about the state of water at this temperature (0C frozen, 100C boiling). The author didnt talk about the correct physical unit, Kelvin, which tells you about the possibitiy of the temperature (no Kelvin values below 0).