Andrew Tam Posted almost 2 years ago How does virtuality translate into reality? Hey Carrie, Your comment reminds me a lot about one of the dream argument, which Descartes' addresses in his "Meditations on First Philosophy." In "reality," we have our five senses, and we use these to give ourselves an understanding of what is going on around us. In dreams, we possess the same five senses and again, use them to understand our surroundings. The upshot of this is the following: if in either case we feel like we are in reality, then it should be impossible to for us to claim with certainty that we are currently in a state of "reality" and not dream. The brain is powerful enough to create for us this "alternate reality" (a dream) and trick us into believing it is "reality." Who is to say its not doing so right now? So what is real and what is not real? It seems very subjective - we choose to make real what we are comfortable with. We make inferences and we fill in gaps. For instance, with the virtual cathode / anode, we don't know that an actual cathode / anode is created, hence the "virtual." We simply invent the idea in order to explain the phenomena. We do this even outside of science (ghosts, the supernatural, religion, etc.). For all of these things, we cannot prove that they are of "reality," but at the same time, we cannot prove that they are "outside of reality." Thus, the choice is ultimately ours - how we put the pieces together and form conclusions. I don't believe that there is one universal or absolute truth; rather, as many others have said, we interpret what happens in our lives how we choose to.