Empirical evidence is the evidence which is defined as the information received through the senses, specifically by documentation as well as monitoring of patterns and behavior via experimentation.
APC stands for Average Propensity to Consume is the one which measures the percentage of income spent instead of savings. And it is evaluated by dividing the average household consumption by average household income.
So, if the empirical evidence states that the APC is falling or decreasing then it is only for short- run or short- period.
There are three domains of human action that is codified law, domain of ethics and domain of free choice. Under the domain of free choice, people enjoy complete freedom and are not governed by written down regulations or rules. People are governed by their own personal standards under the domain of free choice.