u should go to the fountains, look at the symbol at the bottom and click on the buttons that make up that symbol (do this in order for all the symbols at the bottom), the way the liquid falls from the fountain it should make the shape of a letter (so each symbol represents a letter). then once u figured out the whole word go back to "a simulation a fever dream or both" and click on the same letters in order to form the word
if u still can't figure out, then spoilers for what the letters to click below
the word is "forever"