"In the original script though, Morpheus' explanation would have been much better. It would have gone as follows: The original script to the film said the machines enslaved the humans to use them as computer processors as part of a neural network.

However, studio meddling declared this idea to be too hard for the audience to understand, thus it was changed to the plot holes we have now."

https://gamefaqs.gamespot.com/boards/228-movies-older-releas...