Based on the text's survey of the life course, you might conclude that

Based on the text's survey of the life course, you might conclude that while life-course stages are linked to biology, they are largely a social construction.
The most commonly accepted construction is that whether a person is considered as a 'good' or 'bad' person will be really depended on the society that they lived in.
For example, someone who love to kill Jewish people will be considered a 'good' person under Hitler's society