Okay kiddo, have you ever played hide and seek before? Imagine that you are playing with your friends and you have to find them by looking for clues like footprints, sounds, and other things they may have left behind.
Now, imagine that instead of playing hide and seek with your friends, scientists are playing a game of hide and seek with information about the universe. This information is hidden in the form of signals coming from different sources in space like stars, galaxies, and black holes.
Information field theory (IFT) is like a set of rules that scientists use to find this hidden information. They use things like math and computer simulations to make sense of the signals and figure out what they are telling us about the universe.
By using IFT, scientists can create maps that show where the signals are coming from and what they are telling us. These maps can help us understand things like how the universe was formed and how it is changing over time.
So, just like how you use clues to find your friends, scientists use IFT to find important information about the universe!