How can the Supreme Court admit it was wrong about Roe vs Wade?

It happens. I'm not an expert but take Plessy v. Ferguson (1896, separate but equal OK) and then Brown vs. Board of Education (1954, separate but equal not OK). Different justices, different times, different interpretation. It would be interesting to get the entire set of self-identifying "strict constructionist" appelate court judges in a room and see how much they agreed on. I'm betting it wouldn't be 100% even though they all think they know exactly what the framers of the constitution meant in every case. They can't know. They weren't there. The constitution is not a living doent, but people are alive.