Analysis Of John Greco's Article 'External World Skepticism'

In the article “External World Skepticism” by John Greco, he mentions a variety of ideas about skeptical arguments. One of the main arguments is that I can’t know if I am a handless brain in a vat. The philosopher that he brings up is Descartes and his work on Meditations, in which I will be discussing. Greco mentions that Descartes arguments doesn’t support the main idea. Greco continues on to say that it doesn’t support the negation. But I think it does. It’s a clear example that it does support that I am a handless brain in a vat. It all depends on how you are looking at the information that was given. In this paper I will summary the ideas that Descartes has on solving this quarrel. Then I will move on to critique Greco’s idea that Descartes
In which there are many possibilities for it to be inconsistent with what we think we know about the external (outside) world. Then the third step is to claim that the evidence that we posses doesn’t rule out the possibilities. That would mean that the evidence that we have is strong enough for it not to be ruled out of the evidence. From there, now there’s an skeptical argument: “1. A person knows that p on the basis of evidence E, only if E rules out alternative possibilities to p”. (Greco 640). 2. There is a possibility that I’m not sitting on my desk awake, but I am just dreaming that I am. 3. Then that would mean that I’m sitting on my desk, only of there is enough evidence to say that I’m dreaming about instead. 4. The evidence that I have doesn’t rule out the possibility. 5. I don’t know if I’m sitting on my desk. 6. “The same line of reasoning can be brought to bear against any belief about the external world” (Greco 640). 7. Therefore, no one knows anything true about the external
I do think that Descartes example of being able to distinguish between the awaking life or being asleep. I think that it does explain the 2 skeptical argument. The skeptical argument 2 says that I don’t know that not h. That would refer that I am not a handless brain in vat. Descartes example of being able to distinguish between the waking live and being asleep. He gives the example about lying on the bed asleep rather than sitting on the desk awake. How can we distinguish between the two, of being awake or being asleep. In Descartes Meditations, he talks about being in a dream-like state or being in the real world. He’s having a hard time in trying to distinguish between the two. Now when Greco brings up that this explanation doesn’t support that I am not a handless brain in vat, he mentions that Descartes explanation doesn’t support the point. But I think it does, because we have to be able to distinguish between what we know and what we don’t know. I know that I have hands because I can see them and I feel like I have hands. I can hold items in my hands and I can maneuver things with my hands, so therefore I must have hands. If I didn’t have hands then I wouldn’t be able to do the things that I normally do. I know that I am not a brain in vat because I know that I have