"Why do I require an hour to give this lecture when all I have to say really could go into roughly six sentences? Because I could not utter six sentences which are not so heavily charged with ambiguity that no one... would get the picture... Most human sentences are... aimed at getting rid of the ambiguity which you unfortunately left trailing in the last sentence. ...It is not possible to get rid of ambiguity in our statements, because that would press symbolism beyond its capabilities. And it is not possible to get rid of ambiguity because the number of responses that the brain could make never has a sharp edge because the thing is not a digital machine."