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The Aviary Theory in the Theaetetus

Published online by Cambridge University Press:  11 February 2009

R. Hackforth
R. Hackforth
Affiliation:
Sidney Sussex College, Cambridge
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Extract

At 195B 9 it is pointed out that the Wax Block theory does not cover that large class of judgments in which no sense-objects are concerned, e.g. judgments about numbers. How can we make the mistake of judging that 7 + 5 = 11?

The simile of the Aviary, now introduced, is very simple. It illustrates the difference between potential (or latent) knowledge and actual knowledge, i.e. between knowledge at our disposal, because it has been learnt and stored away in the mind, and knowledge present and ‘alive’ at the moment. The theory is that when we make a mistake about the sum of 7 and 5 we are ‘hunting for’ the knowledge of 12, which we ‘possess’ (κεκτ⋯σΘαι) as we might possess a bird in a cage, but which we have not ‘got about us’ (ἒχειν); but we mis-take, wrongly take our knowledge of 11, i.e. we call up before our mind a different piece of knowledge.

Type
Research Article
Information
The Classical Quarterly , Volume 32 , Issue 1 , January 1938 , pp. 27 - 29
Copyright
Copyright © The Classical Association 1938

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References

1 For which see Cornford, F. M., Plato's Theory of Knowledge, pp. 120–127Google Scholar. I take this opportunity of acknowledging the debt which, in common with all students of the Theact. and sophist, I owe to this valuable book.