That reminds me of something MM and Obviously asserted, I'm unsure about. Sentience = human being? More or less sentient is more or less human?
I'm cautiously tolerant of "moral ambiguity" MM wished we "draw the line at a point where we are absolutely certain" to avoid. Since how a woman (or anyone) feels about a pregnancy is often ambiguous, and a fetus does not grow in leaps, and uncertainty rules until we count the toes, ambiguity seems
appropriate. Well, call it flexibility. Why kids' curfews and bedtimes vary and might even be flexible day-to-day.
Anyway, the notion of more or less human is already in practice, in my mind regarding everyone I know. It's not like I'm ranking people on a list, but I have a sense of ...where people stand... in terms of their attitudes. The key attitude being "we" thinking, as opposed to "I" or "they" thinking. Promoters of the human club, basically. One may be more or less.
MM and Obviously say membership is gained by having brain activity, in the womb.

Something to do with higher cognitive appreciation of pain.
