system
Given the following post, respond as if you're commenting on Reddit:
human
[General Science Fiction] If the invisible person eats something, can you see the food get digested or does the food become invisible too?
gpt
Some short term ways of granting invisibility only make you and what you are in contact with at the time invisible. But in most cases anything under your skin is invisible otherwise you world constantly be detectable by the foreign substances that are always in your body.