I believe it - I mean, after all: they did a massive study of 31 people. Myth confirmed then.
http://en.wikipedia.org/wiki/Statistical_power
Please educate yourself, and return if and when you have something useful to say.
They sampled 31 people. Would you accept a 31 person study over a two week period for a new pill in which "most" of the people given the pill (16 out of the 31) were now immune to any form of cancer? Or would you require more people in the study and/or longer, more rigorous testing before you took the pill yourself or gave the pill to your family?
Get over yourselves. 31 effing people.
Complaining about a small sample size screams of ignorance; there's nothing wrong with shameless extroversion, thespianism, or small sample sizes. If you want to point it out and be meaningful, comment on the sample size in relation to the effect size in a way that includes statistical power. Say something. Don't just echo things you've heard other people say.