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Parkinson's law of triviality, also known as bikeshedding or the bicycle-shed example, is C. Northcote Parkinson's 1957 argument that organizations give disproportionate weight to trivial issues. Parkinson demonstrated this by contrasting the triviality of the cost of building a bike shed to an atomic reactor. The law has been applied to software development and other activities.
The concept was first presented as a corollary of his broader "Parkinson's law" spoof of management. He dramatizes this "law of triviality" with the example of a committee's deliberations on an atomic reactor, contrasting it to deliberations on a bicycle shed. As he put it: "The time spent on any item of the agenda will be in inverse proportion to the sum [of money] involved." A reactor is used because it is so vastly expensive and complicated that an average person cannot understand it, so one assumes that those that work on it understand it. On the other hand, everyone can visualize a cheap, simple bicycle shed, so planning one can result in endless discussions because everyone involved wants to add a touch and show personal contribution.
In the third chapter, "High Finance, or the Point of Vanishing Interest", Parkinson writes about a finance committee meeting with a three-item agenda.
The first is the signing of a £10 million contract to build a reactor, the second a proposal to build a £350 bicycle shed for the clerical staff, and the third proposes £21 a year to supply refreshments for the Joint Welfare Committee.
The £10 million number is too big and too technical, and it passes in two minutes and a half.
The bicycle shed is a subject understood by the board, and the amount within their life experience, so committee member Mr. Softleigh says that an aluminium roof is too expensive and they should use asbestos. Mr. Holdfast wants galvanized iron. Mr. Daring questions the need for the shed at all. Mr. Holdfast disagrees.
Parkinson then writes: "The debate is fairly launched. A sum of £350 is well within everybody's comprehension. Everyone can visualize a bicycle shed. Discussion goes on, therefore, for forty-five minutes, with the possible result of saving some £50. Members at length sit back with a feeling of accomplishment."
Parkinson then described the third agenda item, writing: "There may be members of the committee who might fail to distinguish between asbestos and galvanized iron, but every man there knows about coffee – what it is, how it should be made, where it should be bought – and whether indeed it should be bought at all. This item on the agenda will occupy the members for an hour and a quarter, and they will end by asking the Secretary to procure further information, leaving the matter to be decided at the next meeting."
There are several other principles, well known in specific problem domains, which express a similar sentiment.
This started as a piece of corporate lore at Interplay Entertainment. It was well known that producers (a game industry position roughly equivalent to project manager) had to make a change to everything that was done. The assumption was that subconsciously they felt that if they didn't, they weren't adding value.
The artist working on the queen animations for Battle Chess was aware of this tendency, and came up with an innovative solution. He did the animations for the queen the way that he felt would be best, with one addition: he gave the queen a pet duck. He animated this duck through all of the queen's animations, had it flapping around the corners. He also took great care to make sure that it never overlapped the "actual" animation.
Eventually, it came time for the producer to review the animation set for the queen. The producer sat down and watched all of the animations. When they were done, he turned to the artist and said, "That looks great. Just one thing: get rid of the duck."
The law has been misquoted as the "colour of the bike shed" effect, although in Parkinson's discussion the issue related to the construction of the bicycle shed, with no reference to its colour.
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