The British charitable trust Sense about Science has just launched a promotional campaign on the theme of the constant necessity to ask for evidence, about all claims.
Normally, among rational human beings, this necessity should itself be evident. Sadly, though, we know it isn't. Mindless believers, Taliban-like fundamentalists, quacks and snake-oil salesmen abound. Their common characteristic, which they often share unwittingly, is a total disrespect for evidence.
Last night, in the USA, the state of Georgia executed Troy Davis.
There was no evidence proving that this man had ever committed the murder for which he was condemned.