I'm trying to analyze this long noun phrase (NP) syntactically:
The assertion that an understanding of human nature in the light of evolutionary theory can help us to identify the means by which we may achieve some of our social and political goals, including various ideas of equality, as well as assessing the possible costs and benefits of doing so.
I don't understand why "assess" is used with "ing" here. I understand the NP in this way:
The assertion that A can help us to identify B and [can also help us] to assess C.