More importantly than what it’s capable of, the human brain is ultimately limited by our inability to increase its complexity. A human brain takes approximately

More importantly than what it’s capable of, the human brain is ultimately limited by our inability to increase its complexity. A human brain takes approximately 20 watts of power and uses 3 pounds of material to do its calculations. Even with less efficiency, we can make machines much larger than that. If AGI is possible at all, it should be possible to make an AGI that can have thoughts many times more complex than the human brain can. (Such a large machine might not have the reaction speed of a human, but the evolutionary pressures that required us to be able to quickly change our train of thought in response to danger aren’t a limiting factor to any designed intelligence)