Hot answers tagged cbc
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The $1/2^{32}$ is an arbitrary figure, based upon one particular value for what counts as an acceptable risk.
You need to decide what is an acceptable risk. If you think that a $1/2^{32}$ probability of failure is an acceptable risk, then this calculation is relevant to you. If you think it isn't, then decide what you think is an acceptable risk and re-do ...
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