we have bi like in binary(yes, no/ one week yes other no)
and bi in like bisexual(atraction to 2 genders/ twice a week)
i think the problem is more deep than the week
yeah, i think we have generally developed to distinct uses for the root word "bi" like, bisect means to cut in two. that's where my head goes when i hear bi-weekly. a bisected week. to be honest, outside of describing periods of time and bi sexuals i can't think of other times that "bi" means double an amount and not a split amount.