Lawrence Krauss has a new op-ed in the LA Times criticizing the Catholic Church’s loose definition of what constitutes evidence. As you probably know, being named a saint requires the sufficient demonstration of at least two miracles, and the late Pope John Paul II recently met this requirement by “curing” a woman in Costa Rica in 2011 (of what, the article does not say). A panel of doctors ruled that her recovery was otherwise inexplicable.
The problem, as Krauss notes, is that inexplicable remissions happen in medicine somewhat frequently. Are all of these miracles, or is it more likely there is still some aspect of these diseases we still do not adequately understand (remember that medicine, despite the authoritative white lab coats worn by its practitioners, is a relatively recent discipline just now finding its footing as a science)? The Catholic Church is all too ready to declare instances like this “miraculous” without ever considering the more likely alternatives. This stands in direct contrast to the scientific ethos, which gives as much attention to trying to prove ideas wrong as it does to trying to prove them right.
In the mid 1800s, a miraculous appearance of the Virgin Mary was reported in Lourdes, France. Millions have since visited that site in hopes of being cured of their ailments, physical or otherwise. The Catholic Church has kept records of any claimed cures in Lourdes, and more than 60 have been ruled “miraculous”. Of course, it’s not difficult to compare this figure to the number of visitors to the site, year in and year out, and to compare that figure to the average spontaneous remission rate in most cancers and popular diseases. Unfortunately for the church, the latter number is actually higher – meaning, essentially, people who don’t visit Lourdes actually have a higher chance of spontaneous cure than those who do.
Between standards of evidence, there is probably no wider gap than that between the Vatican and science. Claims of miracles are not trivial – if true, they would indeed point to a higher power, and of something beyond our everyday experience. Therein lies the importance of being skeptical, of not settling for substandard evidence in the form of personal testimony or “God of the gaps” arguments (ie. we can’t explain it – therefore, God). As Carl Sagan summarized so well, we have to be careful not to yield to personal preferences in our search for truth, and acknowledge that “extraordinary claims require extraordinary evidence.”
Krauss’ Full Article Available Here: Pope John Paul II and the trouble with miracles – July 7, 2013 – LA Times