text: There is something inherently disordered (to coin a phrase) about an ideology that is so hung up about sex that it grabs any opportunity to try and restrict human beings' capacity to enjoy it, even at the expense of going against its own principles. Clause 15 of Humanae Vitae applied Thomas Aquinas' principle of double effect to allow the contraceptive pill to be used for medical problems even though an "accidental" effect was the contraceptive one. When the AIDS epidemic broke out, one would have thought that the use of condoms to avoid infection where one party to a marriage was HIV positive would have been one of those situations that came squarely within Clause 15. But no, the use of condoms was condemned in all circumstances because the sexual act was not then "open to life". There has to be some inherently disordered thinking here when the Church won't even apply one of ts most cherished principles. Particularly when that could lead to seriously sick children.