“Let X” is a context bound hypothetical — we’re assuming it is true within some argument; we have perfect confidence in the hypothetical, but only within that context.
That’s distinct from an assertion, which is a statement about how the world is with some associated confidence.
“Let X” is a context bound hypothetical — we’re assuming it is true within some argument; we have perfect confidence in the hypothetical, but only within that context.
That’s distinct from an assertion, which is a statement about how the world is with some associated confidence.