I believe that he means that the people who do not have a lot of resources, like the stone age hunters, or someone who doesn't have much, like a poor person or someone without a home. The stone age hunters were hunters from way back who did not have many materials, so they had a much more difficult time completing their tasks.
Answer:
1. Write a formal inquiry for the project
2. Find relevant sources to answer your research question
3. Summarize your sources to better understand them and how they contribute to your project
4. Write up your well-researched answer to your inquiry
5. Create a presentation to share your findings
I think that this means that not everyone has the same mentality, so therefore, the same event can mean different things to different people. For example, every person experiences life differently whether that be different cultures, environments, or religion. This all affects how a person develops moral, ethics and their thinking process. Also, people learn new things every day which can also influence their , already existing, mentality meaning "[their] response can change over time.
not 200 words but i hope this helps :)