Check out Stanley Cavell’s The Claim of Reason if you like Wittgenstein ; lots on intelligent and empathetic robots too, in looking at what forms skepticism takes in people.
It’s likely to affect your understanding of what Wittgenstein was up to, as well.
I remember a cold call from a stockbroker years ago, wherein he argued that if I didn’t believe that the market was going to go down, then I must believe that the market is going to go up.
Leaving aside the stay-the-same option, that isn’t A or not A.
``Believe″ has its own grammar.
Wittgenstein : 575. When I sat down on this chair, of course I believed it would bear me. I had no thought of its possibly collapsing.