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Why was Bletchley Park initially skeptical of Tommy Flowers's Colossus design?
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Colossus
Funding for this code-breaking machine came from the Ultra project.
Bletchley Park officials were initially skeptical of Tommy Flowers's Colossus design for two primary reasons:
- Reliability concerns: The design required the use of nearly 2,000 vacuum tubes. At the time, it was widely believed that such a large number of electronic valves would be too unreliable for consistent operation.1
- Time constraints: Advisers at Bletchley Park doubted that such an ambitious machine could be constructed quickly enough to be useful, fearing that the war would likely conclude before the computer was finished.1
Despite this skepticism, Flowers—who had prior experience building large-scale electronic installations—was confident in the design's reliability, provided the machine remained powered on to avoid thermal stress on the valves. He eventually secured the necessary support from W. Gordon Radley, the director of the Post Office Research Station at Dollis Hill, to proceed with the project.1