Analyze the computational theory of mind and its implications for artificial consciousness. Consider the Church-Turing thesis and its relevance to mental processes. Identify and discuss potential barriers to creating conscious machines, including: Penrose's quantum mind hypothesis, Searle's Chinese Room argument, and the symbol grounding problem. Propose a theoretical test or set of criteria that could determine whether an artificial system is genuinely conscious versus merely simulating consciousness. Address the epistemological challenges in verifying another being's consciousness (the 'other minds' problem) and how these apply to artificial systems.