Final answer:
Mana is an impersonal force that can vary across different cultures and religious traditions, making good mana subjective.
Step-by-step explanation:
The statement "What might be good mana for one person might not be good mana for another" is true. Mana is an impersonal force that is believed to make people or objects sacred. The concept of mana varies across different cultures and religious traditions. For example, certain locations or actions may be considered to have a higher level of mana in one culture, while another culture may have a different perspective on what constitutes good mana. So, what is considered good mana can differ from person to person or culture to culture.