The 25 had no hardware interlocks.

I imagine the whole thing started something like this: "Hardware interlocks are expensive. And if something goes wrong, the machine shuts down for days until we can get an onsite visit from a certified tech."

Certain Ricoh laser printers also have a fail-deadly "feature". There are sensors in there that detect certain dangerous conditions like "paper jam" and "output tray full" that could result in a fire. Thing is, if you disconnect the switches, the printer thinks "everything is fine", instead of shutting down with an error message...

perl -e 'use Crypt::Digest::SHA256 qw[sha256_hex]; print substr(sha256_hex("the Answer To Life, The Universe And Everything"), 6, 2), "\n";'

In reply to Re^5: Plotting a volcano eruption halfway across the globe by cavac
in thread Plotting a volcano eruption halfway across the globe by cavac

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