Why wouldn't it be possible? Why your brain would be so different from a machine?
As far as I can tell, I'm the only consciousness in existence, and "everything else" is just a product of my imagination in my little universe. At least with people, there is empirical evidence suggesting that they are capable of mirroring my feelings, sense of mercy or justice and many other human concepts.
Empirical evidence is not the appropriate tool for inferring the possibility of things that do not exist in the present.