Firmnicity is the science of measuring firmness in order to attain a number that allows the golfer to compare his firmness against others.
This is not a new science, it has been used to assess baseball fields, mattresses, surgical augmentation and a quality of life somehow related to sitting in separate bathtubs while watching a sunset.
Be careful with the numbers in this area. As is the case in DeathMeter stats, the golfer may demand a particular number, but not actually want to play that number.
A training video on Affordable Firmnicity follows: