I've decided to add my two cents to the conversation about infertility and making test-tube babies. Turns out, if you want to use a surrogate, they create a bunch of embryos and implant the few that are deemed "most viable." As we're learning more, some traits have been linked to specific genes. This gives the parents the option to pick which traits they would prefer to parent. This can range from major things like chromosomal abnormalities to balding. What I would like to put out there to the scientific community is this, "when are they going to isolate the gene that tells babies to flip on their stomachs during diaper changes?" Because that shit is annoying. We gotta breed that right out of the human race. That is all.