I have only had the freezers in the apartments that I rent, and it is an escalating number. The question is not "how cold" does the dial make it, but the amount

I have only had the freezers in the apartments that I rent, and it is an escalating number. The question is not "how cold" does the dial make it, but the amount of cold we are asking the compressor etc. to make. For example, if you notice on older cars there is a dial for the air conditioning. On that dial there is a gradually increasing line of thickness (in blue in my mother's 2010 Camry). Increasing makes the car colder, or rather it makes the compressor deliver more cold air into the vehicle. So .. why is this dial on this freezer like that? Because I think at one time in history we viewed air conditioning as a manufactured force. Increasing the number is to increase the intensity of that mechanical force.