Problem of the speckled hen

[1] Philosophically, this problem probes the limits of knowledge by acquaintance: one is unable to know with certainty the existence of determinate things in one's experience merely by the virtue of the experience.

[2] Roderick Chisholm attributes it to Gilbert Ryle suggesting to A. J.

"[3] Joseph Heath remarks that this problem is one of the "descendants of Descartes's 'chiliagon' argument in the sixth of his Meditations".

[4] A. J. Ayer suggested that if we are unable to enumerate speckles accurately, then it is incorrect to suggest that the "sense-data" provides a definite number of speckles despite the fact that the hen does have a definite number of them, clearly outlined.

Chisholm concludes that the problem of the speckled hen emphasizes the fact that there are basic propositions (synthetic propositions which do not refer beyond the content of the immediate experience) that are necessarily imprecise.