"Science tells us that gender is certainly not binary; it may not even be a linear spectrum. Like many other facets of identity, it can operate on a broad range of levels and operate outside of many definitions. And it also appears that gender may not be as static as we assume." - Harvard University (https://sitn.hms.harvard.edu/flash/2016/gender-lines-science-transgender-identity/#:~:text=Science%20tells%20us%20that%20gender%20is%20certainly%20not,may%20not%20be%20as%20static%20as%20we%20assume.)