I don’t know what you meant to set aside by saying “Besides implementation details”, but it seems worth noting that the most important difference is that AGI (if it existed today) would be a naturalistic posit, not a supernatural or magical hypothesis.
To my eye, your question sounds like ‘What’s the difference between believing sorcerers exist who can conjure arbitrarily large fireballs, and believing engineers exist who can build flamethrowers?’ One is magical (seems strongly contrary to the general character of physical law, treats human-psychology-ish concepts as fundamental rather than physics-ish concepts, etc.), the other isn’t.
I don’t know what you meant to set aside by saying “Besides implementation details”, but it seems worth noting that the most important difference is that AGI (if it existed today) would be a naturalistic posit, not a supernatural or magical hypothesis.
To my eye, your question sounds like ‘What’s the difference between believing sorcerers exist who can conjure arbitrarily large fireballs, and believing engineers exist who can build flamethrowers?’ One is magical (seems strongly contrary to the general character of physical law, treats human-psychology-ish concepts as fundamental rather than physics-ish concepts, etc.), the other isn’t.