Why do some TV shows that the critics have a poor opinion of seem to last? Look at Gilligan's Island, a show that was looked down upon at the time and was eventually cancelled to make room for Gunsmoke (it's cancellation was so unexpected that the cast didn't find out until after they had wrapped for the season and went home).
Yet, Gilligan's Island has become a beloved show that has entertained so many people over the years and has become a part of the culture. It's likely that more people probably know the characters on Gilligan's Island off the top of their head than know the characters from other shows of its time.
It is also one of the few shows to be revived with the same cast several times. It was twice in animation (including one where they ended up stranded on a planet), and three times as a live action TV movie (one was intended to be a pilot for a new TV series).
In the distant future, could the impact of Gilligan's Island be shown by space law edicts that require all ships on a three-hour trip to carry an individual that represents the characters from the ancient documentary series believed to be called "G'll'g'n's I'la'd" to ensure survival in case of a crash. Analysis of the video record shows that this combination of individuals could survive any disaster, including: being struck by lightning, turning invisible, eating radioactive substances without harm, create a simulation of modern technology using only primitive materials, and calling for mythological figures to appear.
[I hope this takes us completely off topic. If not, I'll have to try even harder.

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