5.552 The “experience” that we use to understand logic is not that such and such a thing is the case, but rather that something is: but that is no experience at all [eben keine Erfahrung].
Logic is before every experience – that something is thus.
It is before the How, not before the What.
The last sentence sounds almost like Heidegger. Is logic like a filter through which we experience things? Sounds almost like Kant. Mysterious.
Black (p. 303) points to 6.1222, 3.221, 6.44, 2.0271 (identifying the How with the contingent or changing), 2.024 (identifying the What with Substance), and PI 89.