Post-apocalyptic shows are all the rage right now, so when Bird Box and IO hit Netflix, viewers already had their popcorn at the ready. Although both are films are set in dystopian future, IO is different in that it's light on the action and heavy on the symbolism. In the film, toxic air on Earth has caused the majority of humanity to flee the planet and live on a space station orbiting IO, one of Jupiter's moons. Sam Walden, a young environmental scientist, stays behind in the hopes that the possibility of life on Earth still exists. Unlike most films within the genre, IO's storyline moves at a glacial pace and explores the themes of love, loss, and human connection. Love it or hate it, there are definitely inconsistencies and bits of symbolism that you probably overlooked. Here are 10 things you missed in Netflix's IO.