Hallucination is a science-fiction short story by Isaac Asimov.
Part of the Multivac series, it was first published in three parts in the February to April 1985 issues of Boy's Life. It was later collected in 1995's Gold.
Summary[]
Multivac selects Sam to serve on a planet where many report having hallucinations. He is determined enough to find out the truth of these hallucinations. Eventually he himself is claimed to have fallen in such an apparent hallucination but it was absolute reality that his hallucination displayed. He further goes on to prove that the collective native beings of the Energy Planet (the planet where humans have relocated at) are signalling humans to stop harming them in the pursuit of the endless energy supply from the parent neutron star via a kind of telepathy that they had deemed hallucinations.
See Also[]
List of short stories by Isaac Asimov