Yes, and my response to what Mickey said was that why would we think that we're in the cave looking at shadows? Why should I complicate my view of the world with the added baggage of metaphysical idealism when materialism works just fine to explain everything I see? Sure our perception of the world is limited to our senses and measurement techniques, but the scientific framework we've built onto that base appears very consistent and functional with its predictive power. It's definitely not omniscience, but it works.
I only brought up the Cogito argument to point out that Mickey is incorrect in saying that no certain knowledge exists.
Eliminative materialism isn't my thing no. Emergent materialism is what I roll with. So the human mind and culture and numbers are things that exist as emergent properties of other things.
Sure it could all be a lie with us living in the matrix or so on, and it's fun to entertain such thoughts every now and then. But I won't accept it as truth without a better reason than "but technically it's possible".