That is where she is wrong.
Not that it should matter, but he.
To say we can only have faith in objects is not a platitude.
I believe what Grendel meant was that your endless repetition has become meaningless, (like) a platitude, because you aren’t saying anything that hasn’t already been said a thousand different ways for some five thousand years now.
What I am actually saying is that you are not making any new point and that the point you are making is of trivial importance. We must all rely on inference derived from empirical evidence due to the fact that our brains are in vats we call skulls and thus physically isolated from directly experiencing what we call the “external” world.
Thus, on a purely ontological level, since “to know” means “to directly experience” our brains can’t “know” (directly experience) anything but our skulls.
We are all aware of this. And....?