Blinding Skepticism

My learning of epistemological and ethical skepticism has rendered me invalid and incapable of thinking 'normally'. My world has been reduced to a set of possibilities and probabilities. Certainty has become a myth. Can you say that you trust your friend when you are aware that there is a 1 in 100 chance that he might be lying to you? Can you say that this or that scientific theory is true while accepting the fact that the very next observation may refute it? Ah, how i crave for certainty and ah, how it hides itself beneath layers of veils.