What does brave orchids daughters learn from watching what happens between moon orchid and her husband

Chapter 4

"to never let men be unfaithful to them" and to "major in science or mathematics"

After watching the relationship between Moon Orchid and her husband, the daughters understand that they just might need to pursue an education in fields that would allow them independence if needed. They also vow to NEVER "let men be unfaithful to them," in response to the fact that Moon Orchid's husband boasted two wives.