Logic is a human activity. As such it requires certain assumptions about the character of the world (certain comportments toward the world, to speak Being-and-Time-ese) before it can be engaged in. Ditto mathematics or any science, or any activity whatsoever for that matter.
^^^^^ CB: Metaphysics means primitive or first assumptions. And no thinking can go on without first assumptions.
I remember discovering this principle when I was about 17. I think I have it in a diary.
Is it activity or only thought that requires assumptions ?