When I was pregnant, I was busy making lists trying to prepare for motherhood. Magazine articles said my baby needed organic sheets, a giraffe called Sophie, and that I needed something called nipple cream. I heeded their advice and was sure these items made it to my catalog of “must-haves.” But diapers weren’t on my list to research because I figured there was nothing to it. Here are four discoveries my newbie mom brain uncovered about diapers.