 Similar examples are used to show that we can be deceived in other ways as well. Afterimages of colors can remain briefly after we’ve turned away from that which caused the initial color sensation. And it is within God’s power both to preserve a sensible species of color after destroying the thing, and even to create such a sensible species even when no extramental thing ever existed. And finally, he mentions dream skepticism. Unlike Scotus and most others who discuss this problem, Crathorn explains a case in which one who is awake thinks he is dreaming.