How might knowledge of these rights have changed what Ernesto Miranda did when the police questioned him?

I'm assuming you're talking about the Miranda rights.

He wouldn't have spoken to them without a lawyer present. He wouldn't have had to answer any of their questions. He would've just kept his mouth shut.

google: individual rights must be balanced against the values of society at large. For instance, the right to free speech must be balanced against our desire for an orderly society.

Me: In Miranda v. Arizona (1966), the Supreme Court ruled that detained criminal suspects, prior to police questioning, must be informed of their constitutional right to an attorney and against self-incrimination ... The court disagreed, however, and upheld the conviction.