bit rot

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bit rot

A hypothetical disease the existence of which has been deduced from the observation that unused programs or features will often stop working after sufficient time has passed, even if "nothing has changed". The theory explains that bits decay as if they were radioactive. As time passes, the contents of a file or the code in a program will become increasingly garbled.

People with a physics background tend to prefer the variant "bit decay" for the analogy with particle decay.

There actually are physical processes that produce such effects (alpha particles generated by trace radionuclides in ceramic chip packages, for example, can change the contents of a computer memory unpredictably, and various kinds of subtle media failures can corrupt files in mass storage), but they are quite rare (and computers are built with error detection circuitry to compensate for them). The notion long favoured among hackers that cosmic rays are among the causes of such events turns out to be a myth.

Bit rot is the notional cause of software rot.

See also computron, quantum bogodynamics.

bit rot

The inability to access digital data because the formats are obsolete and compatible applications no longer exist to read them. The term is also used for software rot. See data rot.
References in periodicals archive ?
Bit rot refers to the irrevocable degradation or loss of digital information when the infrastructure (the hardware and software) required to access, interpret, view, and use this information is no longer available or executable.
If left unaddressed and unchecked, bit rot has the potential to wipe out contemporary (and future) history--and sooner than we may realize.
Malicious hacking, bit rot and data corruption; the challenges are immense when it comes to securing digital data.