Westworld is a show that asks the question of what it means to be human and definitely made a thought-provoking case in Season 1 regarding the potential human nature of A.I. The show's Hosts walk, talk, eat, love, and, apparently, poop like humans. To all the Westworld fans that have been wondering, you're welcome, but really co-showrunner of the series Lisa Joy deserves most the credit for revealing that bit of TMI in a recent interview:
The hosts are basically organic. It's cheaper that way to print them out. They eat, they sleep, they have sex, they can poop. It's really like a human body with the one difference being where we have a brain, they have a CPU.
The mystery bigger than the maze has been put to rest, and fans should thank the Westworld crew for choosing to reveal that via interview. After all, few people were clamoring for a scene where Teddy was blowing up an outhouse while looking at a magazine that "didn't look like anything," to him. Lisa Joy's revelation to EW might be a little much for some to hear but ultimately is important to know. For example, if the Hosts didn't have a way to get rid of waste, wouldn't the smartest course of action for the humans looking to stop them be to just wait until they all malfunction?
The ability to poop, eat, and drink might sound dumb to lay out to Westworld fans, but it's ultimately necessary in order to show the only real difference between the Hosts and humans is the CPU each resident of the park has in place of a brain. Essentially, the Hosts have absolutely no reliance on humans at this stage of the show, which means that the humans that were in the park at the end of Season 1 are probably not doing too well. That is unless having a CPU brain makes Hosts a little more compassionate than a human who was subjected to the same types of things the characters were when Westworld first started, although the Season 1 finale would indicate they react the same way.
Lisa Joy didn't reveal any massive spoilers regarding the show's future but did confirm having a CPU over a human brain has its advantages. As fans saw in Season 1, self-improvement is as simple as sliding a personality trait one way or another on a tablet. That seems like something the Hosts could inevitably use against themselves, but with Westworld's staff remaining tight-lipped about many things happening in Season 2, fans will just have to wait and see how it all plays out.