Signify

Signify is the fourth studio album by British progressive rock band Porcupine Tree. It was released in September 1996 and later re-released in 2003 with a second disc of demos, which had previously been released on the b-side cassette tape Insignificance, and a third time, on vinyl, on 9 May 2011. It was the first album that frontman Steven Wilson recorded with the band on board from the beginning; previous albums had been essentially solo efforts with occasional help from other musicians.

Background

Writing and recording

Signify was the first Porcupine Tree album recorded as a full band unit, rather than primarily by frontman Steven Wilson with occasional assistance from other musicians, primarily the ones who would become full-time band members as of this album; Richard Barbieri, Colin Edwin, and Chris Maitland. In 1995, the band would alternate between touring in support of their last release, The Sky Moves Sideways, and writing and recording the album, with Wilson describing it as "The album was recorded in quite a piecemeal way with tracks written and recorded in batches of 2 or 3, followed by gaps of up to 3 months." As such, a number of the songs, albeit in early forms, were debuted live before the album's release.

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Symbiosis

Symbiosis (from Greek σύν "together" and βίωσις "living") is close and often long-term interaction between two different biological species. In 1877 Albert Bernhard Frank used the word symbiosis (which previously had been used to depict people living together in community) to describe the mutualistic relationship in lichens. In 1879, the German mycologist Heinrich Anton de Bary defined it as "the living together of unlike organisms."

The definition of symbiosis has varied among scientists. Some believe symbiosis should only refer to persistent mutualisms, while others believe it should apply to any type of persistent biological interaction (in other words mutualistic, commensalistic, or parasitic). After 130 years of debate, current biology and ecology textbooks now use the latter "de Bary" definition or an even broader definition (where symbiosis means all species interactions), with the restrictive definition no longer used (in other words, symbiosis means mutualism).

Some symbiotic relationships are obligate, meaning that both symbionts entirely depend on each other for survival. For example, many lichens consist of fungal and photosynthetic symbionts that cannot live on their own. Others are facultative (optional): they can, but do not have to live with the other organism.

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Symbiosis (Star Trek: The Next Generation)

"Symbiosis" is the 22nd episode of the American science fiction television series Star Trek: The Next Generation. It first aired on April 18, 1988, in broadcast syndication. The teleplay was written by Robert Lewin, Richard Manning, and Hans Beimler, based on a story by Lewin, and the episode was directed by Win Phelps.

Set in the 24th century, the series follows the adventures of the crew of the Starfleet starship Enterprise-D. In this episode, Captain Jean-Luc Picard (Patrick Stewart) tries to mediate a trade dispute between two co-dependent neighbouring planets regarding medical supplies which turn out to be narcotic drugs.

The episode was written after executive producer Maurice Hurley worked on Miami Vice, which he credited for resulting in a narcotic theme in the episode. The guest cast included Judson Scott and Merritt Butrick who had both appeared in Star Trek II: The Wrath of Khan (1982). "Symbiosis" marked the final filmed appearance of Denise Crosby as Tasha Yar until her return in "Yesterday's Enterprise". The episode received mixed reviews with criticism directed at the subject matter and the unsubtle nature of the presentation.