For a long time, many of us have wondered whether we’d ever be able to achieve immortality. Films, TV shows, and books often feature such plots; in Harry Potter, Voldemort struggles to obtain the Philosopher’s stone, which will provide eternal life. And in the 2005 film The Skeleton Key, a former slave couple successfully uses hoodoo several times to transfer their consciousness into younger bodies through to the present day. Next month, a new film called Self/Less will premiere, and it’ll be based on a similar premise. But could it ever actually be possible to transfer our consciousness into other people’s bodies?

According to the above ASAP Science video, the answer is no — but maybe one day. As the above video points out, scientists can already trigger memories by activating them with electricity. Activity in the brain, specifically images conjured during dreaming, can also be predicted through computer programs paired with functional magnetic resonance imaging (fMRI) and electroencephalography (EEG). This means that in a scientifically imperfect world, we could get our brain activity onto computers. And other science has shown the possibility of activating memories through genetically altered neurons.

But even if we were able to download our minds into a computer and then upload them into another body, the fact remains that our brains are incredibly complex, and doing this with a couple of cells is far different from working on the entire brain. What’s more, once it’s uploaded into another body, that body will begin having its own new experiences and become someone else.