Kristof -- Earlier this year, the journal Personality and Individual Differences published an exhaustive review of the literature entitled "Born Gay?" After reviewing the twin studies, it concluded that 50 to 60 percent of sexual orientation might be genetic.
A basic principle of our social covenant is that we do not discriminate against people on the basis of circumstances that they cannot choose, like race, sex and disability. If sexual orientation belongs on that list (with the caveat that the evidence is still murky), then should we still prohibit gay marriage and bar gays from serving openly in the armed forces?
It turns out that when males and females are exposed to a loud noise, they blink in somewhat different ways — except that lesbians appear to blink like men, not like women.
Can we countenance discrimination against people for something so basic as how they blink — or whom they love?
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