The world is presented in a kaleidoscopic flux of impressions which has to be organized by our minds - and this means largely by the linguistic systems in our minds. We cut nature up, organize it into concepts, and ascribe significance as we do, largely because we are parties to an agreement that holds throughout our speech community and is codified in the patterns of our language….We are thus introduced to a new principle of relativity, which holds that all observers are not led by the same physical evidence to the same picture of the universe, unless their linguistic backgrounds are similar, or can in some way be calibrated.

Benjamin Whorf (1940), cited in ‘Attention and Human Performance’ by Steven W. Keele 1973 [p142]