"It prevents implantation, which is abortive if..."
And out of those ways in which it works, that is a big if.
"A big IF..."
It might or might not be. If conception happened at 30minutes, say, and the pill was taken 36 hours later; there's not "IF" about it, you've got an abortion.
If conception is delayed 36 hours and the pill is taken 24hours after, then, yeah, conception gets prevented and there's no "IF".
My main problem is the fact that we're all flippantly bantering about "IF" with human lives in the balance. That's downright macabre.
You are correct in "that is a big if."
Most people who believe in "recreational sex" use some means of protection, both from pregnancy and STDs. What are the odds?
But it is that "if" that maybe things if they are just right they are worried about.
The argument can be made for the opposite. What if everything was just right and the egg was fertilized. This pill enduces murder.