Yup! In that case, this is not an answer that can be solved “mathematically” as you asked: convincing a large group of total strangers to do something for you is within the realm of crowd psychology.
If r/place showed us anything, it’s that you can get people to work hard together if you make them feel part of a community. Maybe creating a Lemmy community whose goal is to keep all posts within that community at 69% would work?
Not sure if that’s the answer you wanted but that’s how I’ve understood your question so don’t hesitate to correct me :)
Sorry to butt in but why is my fellow waffle’s demand not possible? :(
NSFW is how you tag stuff that you don’t want your colleagues to see on your screen at work: it’s not just for porn!
Included pic of rubber duck of peace as proof of goodwill: