rotate it on its axis inward, i.e., sinistrally for the right eye and dextrally for the left

You'd better run like hell!

The rationalist, Kantian definition of truth, therefore, fails. At the bottom of every fact there is an act of reason, and thus no realist notion of truth serves; at the bottom of every rational necessity there is a choice, the act of invention, and so no critical definition of truth serves.³ ² ⁹ The forms and categories of thought themselves need verification in an experience which does not apply them so much as make them.³ ³ ⁰ That the very conditions of intelligibility change and develope is clear, according to LR, from the history of science.³ ³ ¹ Further, a list of categories given once and for all is nothing but itself a brute fact, an irrational surd, if it cannot itself be explained.³ ³ ²

Nighness of blood.