Philosophers are prone to define knowledge as having reasoned one’s way to some true beliefs. The obvious kicker in any such definition is truth; for how am I supposed to determine whether a belief is true? If I already know what is true, why should I bother with some philosopher’s definition of knowledge? What’s the use of this stupid definition anyway? “Hey, I’m just doing my job,” replies the philosopher. “You wanted to know what knowledge is, and I told you. If you want to know how to get it, that’s another story — and for that you’ll have to pay extra!”
If we think of true beliefs as getting things right — really right, like if you asked God about it they would say, “Yep, that’s what I figure too” — then it is indeed difficult to see how we could ever know the truth, and not just because friendly chats with God are so exceedingly rare, but also because we don’t really know what we mean when we say “really right” instead of just saying “right”. The “really” is supposed to add some special oomph to the knowledge, an oomph we by definition can never experience or access: it is the knowledge of what is going on in the world when no one is knowing it, which is like trying to see what your face looks like when no one is looking at you. “Really”, in this context, just means: at a level that is impossible to attain. Trying to get something really right means never knowing for sure whether you in fact have it right.