1. In the past you have had dreams where you were convinced of everyday facts like these, but it turned out that you were only dreaming them.

2. So, you can’t rule out the possibility that you are fast asleep and dreaming all this in your bed at home.

3. If you can’t rule out the possibility that you are not sitting in front of your laptop then you don’t really know that you are.

Why is teleportation any different from going to sleep and waking up after an interval? Would it bother you to discover that every time you have gone to sleep your identity has been lost and it is a replica that wakes up? Would you try to stay awake for as long as possible or would that be an absurd response?