A connection

How did Food Triage lead to Theory of computation?

9 steps · 5 domains · 301,936 years

Food Triagesince the species began · 300,000 BCThe hard-won knowledge of what is safe to eat and how cooking turns poison into food — the difference between a full belly and a fatal mistake.
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Control of Fire~1,000,000 BC · 1,000,000 BCThe ability to keep, feed, and eventually start a fire at will — humanity's first external source of energy.
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Charcoalby ~4,000 BC (as furnace fuel) · 4,000 BCWood baked without air until only nearly-pure carbon remains — a fuel that burns far hotter and cleaner than the wood it came from.
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Iron Smelting (Bloomery)~1,500 BC · 1,500 BCReducing iron ore to workable metal in a charcoal-fired clay furnace.
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What the arc melts and re-freezes is smelted iron and steel; the craft is a way of locally re-liquefying the smith's metal and letting it solidify as one piece.
Electric arc welding1881 (Benardos's carbon arc) · 1881 ADJoining metal by drawing a sustained electric arc between an electrode and the workpiece — a spot of controlled lightning, several thousand degrees hot, that melts the edges of two steel pieces so they flow together and freeze as one continuous metal.
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An arc needs a strong, steady current — tens or hundreds of amperes at low voltage — which only a dynamo could deliver; arc welding was physically impossible before the generator existed.
Electric Generator1831 AD · 1831 ADFaraday's discovery that moving a magnet past a wire induces current — mechanical motion converted directly into electricity.
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Vacuum Tube (Triode)1906 AD · 1906 ADA light bulb's evil twin: electrons boiled off a hot filament in a vacuum, steered by a metal grid — the first electronic amplifier and switch.
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Fast read/write memory and logic needed electronic switching, and the vacuum tube supplied it years before the transistor existed.
Stored-program computer1945 AD (EDVAC report) · 1945 ADA computer whose instructions live in the same read-write memory as its data, encoded as ordinary numbers. Because the program is just numbers in memory, the machine can be given an entirely new task by loading new numbers — no rewiring — and can even read and modify its own instructions.
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The machine's arithmetic and control are built from AND/OR/NOT gates operating on binary numbers.
Boolean logic1847 AD · 1847 ADAn algebra in which the only values are true and false — 1 and 0 — and the only operations are AND, OR and NOT. It turns reasoning into calculation: logical statements can be combined and simplified by fixed rules, the way ordinary algebra combines numbers.
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The elementary steps a computation is built from are Boole's — every operation of a machine reduces to true/false switching.
Theory of computation1936 (Turing and Church) · 1936 ADThe mathematics of what can be computed at all, by any mechanical procedure whatever. Alan Turing and Alonzo Church, independently in 1936, made the notion of "algorithm" exact — and used it to prove that some perfectly well-posed questions have no algorithm that can answer them.

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Every link in this chain is a verified dependency — not a trivia association. Explore either end: Food Triage or Theory of computation.