Spoilers are precisely defined here. Rules vary by the story's medium. Info from television stories can't be added here until after the top or bottom of the hour, British time, closest to the end credits roll on BBC One. Therefore, fans in the Americas who are sensitive to spoilers should avoid Tardis on Sundays until they've seen the episode.
The vibrations of refined madranite one-five and voolium crystals could be used to power a psychic interference transmitter, and the presence of these two minerals brought Calufrax to the attention of the crew of the pirate planet Zanak, who needed it to neutralise the psychic powers of the Mentiads. (TV: The Pirate Planet)
Rarely, for Doctor Who, all accounts that present information about Hitchhiker's present it as reality, not fiction, even in accounts where the series is shown to also exist in-universe. Therefore, everything on this template is "reality" as far as the DWU is concerned. Some categorisation may be based upon conjecture. Real world information should not enter into this.
Community content is available under CC-BY-SA unless otherwise noted.