Is 10 guaranteed to solve all problems? 99% confidence it will? How much does it cost in weight budget to add some 9s to that? Oh wow tampons are light. 100 it is then.
Everybody around me who would find utility with them has non-normal usage patterns (birth control, PCOS, hysterectomy) so there is a pretty high variance in my observations (across individuals and time) and I don't need to actively seek more samples. I just make sure there is a box of tampons around and borrow one to use for wound care when I need one and replace the empty box when requested.
