Why should humans be “defined” as having ten fingers and being either “male” or “female” when we could have a broader definition?
Yes, and we are now coming to recognize that there are variations on this theme as well. The DNA of people with Down syndrome is slightly different from those who are not Down people. Yet we do not say that Down people are something other than human. On the contrary, they are among the sweetest, kindest, most infectiously charming of all human persons. I never cease to be amazed at the progress many of them are making nowadays, now that we recognize and value the diversity they embody, and make it possible for them to be “the best versions of themselves”. They go to college, they marry, they have rewarding careers, you name it. They’re truly amazing people.