If you think that there is just a single identity for a person, "I am just X, that's it, I can't be several things, I can be just that," that's the start of the problem.
Jos ajattelet, että on vain yksi identiteetti per nuppi, "Olen vain X, siinä se, en voi olla mitään muuta, voin olla vain se," se on ongelman alku.