Aldous Huxley explained hallucinations were caused by the brain filling gaps in the amount of data it usually gets from the real world; gaps artificially created by drugs.

The brain fills these gaps with things the brain has in storage.

Early drug takers believed they were seeing more of the real world while hallucinating.

In fact they were seeing less because they had dropped out to tune into a movie they were creating using more and more images supplied by the CIA via music and movies.

Aldous Huxley explained hallucinations were caused by the brain filling gaps in the amount of data it usually gets from the real world; gaps artificially created by drugs, by things the brain had in storage.

Early drug takers believed they were seeing more of the real world while hallucinating.

In fact they were seeing less because they had dropped out to tune into a movie they had created using more and more images supplied by the CIA via music and movies.