(1) “Whatever is green is coloured.” (2) “Whatever is square is rectangular.” (3) “The sum of three and two is five.” (4) “Necessarily, if ‘...

There’s a YouTube video called ‘Water Isn’t Wet’ in which the presenter discusses various definitions of water which have it that “water is...

The philosopher J.R. Lucas argued that all minds must be “alive” and (it can safely be assumed) human, not “dead” and “ossified” like “mach...