I think there are two kinds of AGI skepticism. There's skeptics like us that think we're nowhere even close to beginning to understand how to build an AGI, but

I think there are two kinds of AGI skepticism. There's skeptics like us that think we're nowhere even close to beginning to understand how to build an AGI, but see no reason to suppose such a thing is impossible. Then there are those who think AGI is impossible in principle. The people I get most frustrated with are those that use the first argument - we're nowhere close to implementing an AGI - as an argument that therefore AGI is impossible. Sometimes they don't even realise or recognise that this is what they are doing. The argument is often that "we do X and computers don't do X therefore computers can't be like us in that way". Well no computers don't do those things yet because we haven't developed AGI yet. That's not a reasonable argument that developing AGI is impossible.