[consumer451]

> You obviously believe the human brain is something supernatural which I do not

This deserves zooming in on. There seem to be only two options.

1. There are supernatural forces, and we have magical things like a human soul

2. There are no supernatural forces, and our brains are a series of chemical and electrical states, and nothing else

If it is option 2, then you must accept that it is plausible that a machine could be made which could also have those those states, and navigate them like our biological machine. Which path of development leads to this is unknown, but it is illogical to me to say things like "won't ever be able to replace" humans.

I am only repeating and expanding on what you said because this is a realization which I only came to relatively recently and thought it is worth sharing.