"Offering different lengths of parental leave based on sex is discrimination!" yells well-known egalitarian Wil Sparkle, pounding on your desk. "And it also disadvantages gay couples. Why shouldn't a lesbian mother have time off when her partner gives birth? I say we offer both parents six months' fully paid leave, regardless of sex. It's pricey, but it's the only way to be fair. Oh, and parents who've just adopted can have it too."