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Full Idea
The impossibility of seeing two colours simultaneously in a given direction feels like a logical impossibility.
Gist of Idea
Some facts about experience feel like logical necessities
Source
Bertrand Russell (Human Knowledge: its scope and limits [1948], 9)
Book Ref
Russell,Bertrand: 'Human Knowledge' [Routledge 2009], p.113
A Reaction
I presume all necessities feel equally necessary. If we distinguish necessities by what gives rise to them (a view I favour) then how strong they 'feel' will be irrelevant. We can see why Russell is puzzled by the phenomenon, though.
| 4786 | Russell's 'at-at' theory says motion is to be at the intervening points at the intervening instants [Russell, by Psillos] |
| 16489 | Is it possible to state every possible truth about the whole course of nature without using 'not'? [Russell] |
| 16490 | Some facts about experience feel like logical necessities [Russell] |
| 16488 | It is hard to explain how a sentence like 'it is not raining' can be found true by observation [Russell] |
| 16491 | If we define 'this is not blue' as disbelief in 'this is blue', we eliminate 'not' as an ingredient of facts [Russell] |