Tom Chivers, journalist på The Telegraph, skriver 31 jan 2013 i sin blogg:
Yes, yes, I can't "prove" that God doesn't exist or that we won't live forever. I can't prove anything, down to and including my name or the existence of Leamington Spa. Eventually you just have to admit that if it looks like the absence of a duck, walks like the absence of a duck, and quacks like the absence of a duck, the duck is probably absent.
För tydlighetens skull: Detta refererar till ett sk Duck test, som är ett amerikanskt talesätt.