I've mentioned before that I was reading a book called "Agnotology: The Making and unmaking of Ignorance". One chapter was about the disparity in which plants were brought from the New World to the Old during the Age of Exploration. Foods were sought out, but abortifacients were at best ignored (most explorers being men and many of them being enslavers of the natives). The only such plant mentioned by name was one from Hispaniola, but the author hinted that there were several others that even she knew of, and she was a mere outsider trying to learn about a taboo subject. So whichever tribes Jefferson was talking about that had babies only every 7 years could easily have had an herbal method that has not been passed down to modern times or has been kept secret from outsiders for whatever reason.

I'm sorry I missed the interview with Ralph Nader yesterday.

In a multi-vote-district election system (shameless self-promotion), votes for "none of the above" would be less risky than in our single-member-district system; it would be rare for any district to go completely without representation, because e.g. if there are 5 legislative votes per district, you'd have to have about a 90% NOTA rate to end up that way.

"None of the above" sentiment could also be assessed not by putting that option on the ballot, but by comparing votes cast for a candidate to the number of registered voters, rather than to the number of cast votes.