Hooray for Social Science!

From a story on the overturning of Prop 8:

Backers of Proposition 8 contended that the legal burden was on the challengers to prove there was no rational justification for voting for the measure. They cited as rational a view that children fare best with both a father and a mother.

But defense witnesses conceded in cross-examination that studies show children reared from birth by same-sex couples fared as well as those born to opposite-sex parents and that marriage would benefit the families of gays and lesbians.