[…] What we believe is then of tremendous practical importance. False beliefs about physical or social facts lead us into poor habits of action that in the most extreme cases could threaten our survival. If the singer R Kelly genuinely believed the words of his song ‘I Believe I Can Fly’ (1996), I can guarantee you he would not be around by now.
But it is not only our own self-preservation that is at stake here. As social animals, our agency impacts on those around us, and improper believing puts our fellow humans at risk. As Clifford warns: ‘We all suffer severely enough from the maintenance and support of false beliefs and the fatally wrong actions which they lead to …’ In short, sloppy practices of belief-formation are ethically wrong because – as social beings – when we believe something, the stakes are very high.