"The visions described in the script are inspired partly by the accounts of people who have had near-death experiences, who describe a tunnel of light, seeing their lives flashing past them and ‘astral’ visions, and partly by similar hallucinatory experiences obtained by consuming DMT, the molecule which the brain sometimes secretes at the moment of death and which, in small doses, enables us to dream at night.

The film should sometimes scare the audience, make it cry and, as much as possible, hypnotise it."