Maybe they do know, but they have "very low time preference". They don't mind waiting ~infinite for a good discount :D
If you check on the historical data `
Discussion
Well I always see those and wonder, if they ever got fullfilled with such a high negative premium.
Would love to analyse the old data to see that.
I don't think -7% get ever taken (there are some viz curated by the community in learn.robosats.com/stats ). But certainly -1 and -2 percent get taken from time to time.