 Consider the second horn of this dilemma. Is it true that if we can’t know what the (whole) truth of some matter is, we also cannot ascertain whether or not we are making progress towards it? Suppose you are interested in the truth about the weather tomorrow. Suppose you learn (from a highly reliable source) that it will be hot. Even though you don’t know the whole truth about the weather tomorrow, you do know that you have added a truth to your existing corpus of weather beliefs. One does not need to be able to ascertain the whole truth to ascertain some less-encompassing truths. And it seems to follow that you can also know you have made at least some progress towards the whole weather truth.