Questions about example sentences with, and the definition and usage of "Minds"

A: parachutes are useful only when they open.
similarly or in the same way a person's mind can accept and learn many new things when he or she keeps an open mind that is a willingness to listen to or accept different ideas or opinions
trying to listen different ideas and opinions without saying NO that's wrong..

A: Mind your p’s and q’s is telling someone to mind their manners
Their please and thank yous.

Child: give me water
Parent: mind your ps and qs
Child: please may I have water
Gives wAter
Child: thank you

P, please
Q, thank you “kyou=q”