Final answer:
The limitations of authentic happiness theory include the difficulty of measuring happiness, the subjective and incomparable nature of happiness, uncertain time frames for calculations, and the inadequacy of happiness as the sole measure of well-being.
Step-by-step explanation:
Examples of the limitations of authentic happiness theory are quite diverse and reflect the complexity and subjectivity involved in measuring happiness. One limitation is the inherent difficulty in quantifying happiness, as it is a subjective experience that can vary greatly between individuals. This leads to the problem of comparability, as one person's maximum happiness might not equal that of another's.
Moreover, the time frame for the calculations is vague and can range from a year to a century, making it unclear over what period happiness should be measured. Similarly, it is unclear whether the happiness calculations should consider the well-being of a small group, a whole country, or the entire world, including non-human sentient beings, as suggested by philosophers like Peter Singer.
Lastly, critics argue that happiness cannot be the sole measure of well-being, as demonstrated by thought experiments like the Experience Machine. Additionally, phenomena such as the relative immutability of happiness levels after significant life events (e.g., winning the lottery or experiencing an accident) challenge the idea that increased pleasure or satisfaction will always lead to greater happiness.