Some (small) considerations on epistemology

For a fleeting moment, while I contemplated quantum immortality, I thought if I wasn't dreaming. If my life was after all, a dream. Whether I could trust my senses, or more so reason itself, to provide me with a definitive answer, a priori or a posteriori, about the very nature of reality.

All of this in a fleeting second. And this question, those thousands of impromptu fleeting moments (not considering the hours I spend contemplating the question for itself), brings me back to a main question: What can we really know? Is it safe to make metaphysical assumptions? Are we ready to know an objective reality, if any exists?

Well, I couldn't sleep, and I'll have to make some physical effort, since I'm moving to Rotterdam-Zuid. I guess I'll have to take a Red Bull for the placebo effect. But aren't those nights I spend awake great for thinking?