'The Matrix Resurrections': Theory claims humans are wrong about what powers the Machines
In all of 'The Matrix' movies from the franchise — as well as 'The Matrix Resurrections' — viewers are made to understand that the machines we see onscreen happen to use humans as batteries.
In fact, the first time we're introduced to this concept, Morpheus is in the "desert of the real", and hence, this very aspect is constantly reinforced through all the 'Matrix' films. This is why the freed humans describe people who live unaware within the Matrix as "coppertops", the nickname for Duracell batteries, since the machines use them as their source of power.
But now a rather bizarre theory uses a twist on the 2nd Law of Thermodynamics. According to this theory, it's impossible to create energy from human beings. In addition, if said machines somehow manage to crack fusion, they will end up generating all the energy that they'll possibly need — so much so that the energy present in a single glass of water could power the whole of Chicago in our day and age.
That being said, it's so much more likely that the above-mentioned machines could someday use humans as processors. If we can, one day, provide the power that's required to get the machine world up and running, there's nothing like it.
Getting back to the movie, the inhabitants of Zion don't quite comprehend this vast concept, since their computer systems are solely and shockingly underdeveloped. When we get a better look at them working on technological artifacts, the results happen to be quite simple, even after having rummaged through technology from said machines.
We as humans eat from utensils while the inhabitants of Zion grind gunpowder for their machines by hand. It's safe to say that even making a Powerpoint presentation on concepts like "cloud computing", and basic digital architecture for Zionists is a far-fetched idea, and downright impossible. Hence, the explanation behind humans possessing what the machines are more than capable of doing is flawed.
'The Matrix Resurrections' was released on December 22, 2021