There is reason to believe that consciousness, sentience, or emotions require a biological base.
Or
There is no reason to believe that consciousness, sentience, or emotions do not require a biological base.
The first is simple, if there is a reason you can ask for it and evaluate it's merits. Quantum stuff is often pointed to here, but the reasoning is unconvincing.
The second form There is no reason to believe P does not require Q.
There are no proven reasons but there are suspected reasons. For instance if the operation that nerons perform is what makes consciousness work, and that operation can be reproduced non-biologicLly it would follow that non biological consciousness would be possible.
For any observable phenomenon in the brain the same thing can be asked. So far it seems reasonable to expect most of the observable processes could be replicated.
None of it acts as proof, but they probably rise to the bar of reasons.
Interestingly the people doing the actual envelope pushing in this domain, such as Ilya Sutskever, think that there it’s a scaling problem, and neural nets do result in AGIs eventually, but I haven’t heard them substantiate it.
(I'm asking because of your statement, "Don’t fool yourself into believing artificial intelligence is not one breakthrough away", which I'm not sure I understand, but if I am parsing it correctly, I question your basis for saying it.)
“one breakthrough away” as in some breakthrough away
This is not much different than saying that it’s possible to fly a spacecraft to another galaxy because spacecrafts exist and other galaxies exist.
Possible and practically attainable are two far different things.
It is very different. We have never seen a spacecraft reach another galaxy so we don't know it is possible.
We have an example of what we call intelligence arising in matter. We don't know what hurdles there are between current AI and an AGI, but we know that AGI is possible.
Let me know when I’ll be able to buy my $30,000 car with level 5 self driving.
I find anyone with confident answers to questions like these immediately suspect.