I'm going to keep this thread rooted in science, please post replies on topic. I know the movie the Matix brings alot of creative people and discussions whenever its mentioned, so lets try to keep that passion grounded in realistic terms. That said, here is a reason why I think the movie the Matrix was flawed in its idea that colonies of humans would be harvested as batteries for the Matrix's power supply... The human body uses very little energy. In fact, the human body (on average) uses only 100watts of power throughout a typical day. In real terms, this means that a normal lightbulb (incandescent) which has a wattage of 100watts, equals the power usage of a human body. Conversely, your home computer uses about 300-500watts depending on the model. A human can reach peek power usage levels of ~500watts for short bursts of time, like riding a bicycle full out for a minute. So if we consider each human as equivalent to 100watts, we can multiply this number by 6 billion people to reach a total power output from the entire human civilization of 600 billion watts (600GW). Here is a link to a thread where this was discussed in more detail: https://www.physicsforums.com/showthread.php?t=145043 600GW might sound like alot of power and it is, but consider that the world produced a total of 3,700GW of electricity in 2003. (http://www.eia.doe.gov/oiaf/ieo/electricity.html) We can see now that our entire population, if used as batteries, would only produce 1/6th the electricity that all other means of electricity generation produce. Note that this number of 600GW is a very high estimate too, because it assumes that the human body is a perfect battery that can perfectly transfer all of its power to the Matrix AI. However, there are several caveats to this 600GW number that would greatly reduce its effective power transfer levels. Here are a few off hand, 1) these human bodies would still need to use some of their 100watts to mediate their bodily functions necessary for sustaining their lives, 2) these human bodies still radiate away some of this 100watts as heat, 3) these human bodies would lose alot of this 100watts at the junction between their body and the AI matrix interface. I'm sure you can think of many more too. All in all I think you can appreciate that the human body is a pretty lousy battery and the AI Matrix would be better off extracting energy from the 'food' that they feed the humans, whatever that is. The idea is plain inefficient, just like getting your calories from a steak, when you could have eaten the cornmeal they fed to the cow instead. And if machines and computers have taught us one thing, its that they like to be efficient! All thoughts appreciated.