Roe v. Wade is gone.

[John 6IX Breezy]

An acorn is not an oak tree.

Same organism—at different stages of it's development.

Pro-life arguments have a definite advantage on this front. And I would be surprised if you've ever convinced someone that a fetus isn't a developing human by saying acorns aren't oak trees.

That's why it's necessary to understand that pro-choice positions aren't dependent on such facts. The famous example is that of someone being connected to a sick person as a kind of living dialysis machine. There's no doubt here that the sick person is a fully grown human being. The question is whether it's right to keep the healthy person tied up to the sick person if they ever wanted to leave.