Logic Quotes …

Logic will get you from A to B. Imagination will take you everywhere. Albert Einstein Contrariwise, if it was so, it might be; and if it were so, it would be; but as it isn’t, it ain’t. That’s logic. Lewis Carroll Logic! Good gracious! What rubbish!...

Zooming the Zone

We all know that the best way to get something done is to write down a list of what to do. Well, here for you need of course some idea of what it is you are doing and that usually implies a little of analysing or broadly spoken “cutting into pieces”. In...

Hilbert’s program

Never forget that even the most solid buildings of thought are supported by sand only … In mathematics, Hilbert’s program, formulated by German mathematician David Hilbert, was a proposed solution to the foundational crisis of mathematics, when early...
John Venn and the Diagrams

John Venn and the Diagrams

Venn diagrams were introduced in 1880 by John Venn (1834–1923) in a paper entitled On the Diagrammatic and Mechanical Representation of Propositions and Reasonings in the “Philosophical Magazine and Journal of Science”, about the different ways to...

Barber paradox

Suppose there is a town with just one barber, who is male. In this town, every man keeps himself clean-shaven, and he does so by doing exactly one of two things: shaving himself; or going to the barber. Another way to state this is that “The barber is a man in...