He didn’t define away the problem; his flaw differed from the tautological. The fatal flaw he introduced was creating a computational process and then substituting in himself for that computational process when it came time to evaluate whether that process “understood” Chinese. Since he’s a component of the process, it doesn’t matter whether -he- understands Chinese, only whether the -process- understands Chinese.
He didn’t define away the problem; his flaw differed from the tautological. The fatal flaw he introduced was creating a computational process and then substituting in himself for that computational process when it came time to evaluate whether that process “understood” Chinese. Since he’s a component of the process, it doesn’t matter whether -he- understands Chinese, only whether the -process- understands Chinese.