You could have a question about the scientific consensus on whether abortion can cause breast cancer (to catch biased pro-lifers). For bias on the other side, perhaps there is some human characteristic the fetus develops earlier than the average uninformed pro-choicer would guess? There seems to be no consensus on fetus pain, but maybe some uncontroversial-yet-surprising fact about nervous system development? I couldn't find anything too surprising on a quick Wiki read, but maybe there is something.
I would expect that even as a fairly squishy pro-abortion Westerner (incredibly discomforted with the procedure but even more discomforted by the actions necessary to ban it), I'm likely to underestimate the health risks of even contragestives, and significantly underestimate the health risks of abortion procedures. Discussion in these circles also overstates the effectiveness of conventional contraception and often underestimates the number of abortions performed yearly. The last number is probably the easiest to support through evidence, although I'd w...
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