Am reading “The Light Ages” by Seb Falk.
Just learnt that in medieval times, before mechanical clocks were a common thing, each day was subdivided in 12 light and 12 dark hours. Over the year the length of hours varied. This goes back to Egyptian culture and lasted until 14th c.

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A good example how artefacts can exhibit a kind of agency (or is rather constraints?), even though we would not attribute any intentional behaviour to them.

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