I would recommend starting with the Pontius Pilate question: "What is truth?"
Many people accept the standard implication that "truth" requires identification of something that is true at all times, places, and for all people, but is such a thing even possible? If not, what IS possible? Think about the discussion of images and illusions in Lucretius. The awning at the spectacle casts a color on the Senators. Did that "truly" make the Senators that color?
As for anticipations we have much less to go on, but I follow the DeWitt theory and you should at least consider it before deciding. The issue here revolves around whether anticipations are (1) simply what is referred to as conceptualization after experience (I see these animals standing in the field and I names them cows) or whether (2) they are indeed PREconceptions which operated prior to experience. Again, be sure to read and consider DeWitt on this topic before you accept the majority "conceptualization" view.