Lex Fridman Podcast
#449 – Graham Hancock: Lost Civilization of the Ice Age & Ancient Human History
Graham Hancock
These maps are intriguing because they have very accurate relative longitudes. Our civilization did not crack the longitude problem until the mid-18th century with Harrison's chronometer, which was able to keep accurate time at sea. So you could have the time in London and you could have the local time at sea at the same time, and then you could work out your longitude.
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