Philosophy Unit 3 discussion

Consider the following predicament, which is similar to that portrayed in the 1999 science fiction action film The Matrix: You are the science project of a high school being from an advanced civilization. You were abducted and your brain removed and suspended in a fluid inside a vat. All your feelings, thoughts, emotions, sensations, desires—in short, all your mental contents—are simulated by a computer. Just like in the film, your life seems normal to you, but in reality is just a simulation. Everything you think that you know is not true.

Considering this predicament, is it possible for you to have true knowledge of anything? Or are you destined to be forever the victim of a grand delusion perpetrated by the computer that stimulates your brain? What can you know for sure?