[dragonwriter]

> This originally was intended to protect against typos;

Double entry bookkeeping is much older than typing, but, yes, its a check against incorrect entries.

[jacques_chester]

Speaking of history, I learned that the word "control" comes from contra rotulus -- roughly "checking against the wheel", which was apparently from an early medieval device for keeping tallies. The second meaning of "domination" came later.

[ectopasm83]

Babylonian dogs walking on your clay tablet.

[jimbokun]

Cats, more likely.