結論からいうと
to make a person understand by reasoning with them
to understand something clearly
the act of understanding something
to think about something logically
to think about the logic of something for the purpose of clarification
a way of conceiving something
to have knowledge of someting and understand very well
論点がわかる。
I think that way is more logical.
Your conclusion is contrary to logic―against logic.
This is the bottom line.
I know the ropes.
It is impossible to defy public opinion―set public opinion at defiance.
the speciousness of his argument
Your position is untenable.
I cannot appreciate his logic.
It conforms to the requirements of logic.