On the contrary, he is assuming we do not; he assumes that it is quite impossible that a human being would actually do the necessary work. That’s why he said that “Simone can’t exist” in this situation.
So his argument is that “a human is not an appropriate tool to do this deterministic thing”. So what? Neither is a log flume—but the fact that log flumes can’t be used to simulate consciousness doesn’t tell us anything about consciousness.
On the contrary, he is assuming we do not; he assumes that it is quite impossible that a human being would actually do the necessary work. That’s why he said that “Simone can’t exist” in this situation.
So his argument is that “a human is not an appropriate tool to do this deterministic thing”. So what? Neither is a log flume—but the fact that log flumes can’t be used to simulate consciousness doesn’t tell us anything about consciousness.