On 12/19/2018 7:27 AM, Jason Resch wrote:
The output of a computation is not the computation, and we make use of non-halting programs all the time. For example, Operating Systems, Web Servers, Virtual Machines, etc. Ideally, these programs never halt, and usually they never output anything, unless they crash.
Those are programs in the vernacular, but they are not programs in the Turing sense unless you count all their inputs/outputs as part of the "program". They are open systems.
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