Do you believe "Doc" is real?

[SetBuilder]

For a nit (one that makes me feel like what I'm learning isn't going to waste), a computer doesn't multitask - it executes commands, one at  a time. The CPU switches from process to process very quickly, to give the illusion of those processes executing simultaneously.

How's that for a completely off-topic thread?
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The exception being hyperthreading (P4 600 series), multi-threading (Pentium D 800 series), and a few series of XEON procs.

And Doc, thinking about 6 subjects at once is easy. Unfortunately, it seems the back of my head is a black hole, as I can only remember a tenth of what I think about until a least a decade later. Makes learning a new language difficult (unless it's a computer language).