Why is (x) the symbol for an unknown? In this short and funny talk, Terry Moore gives the surprising answer.
Terry Moore is the director of the Radius Foundation, a forum for exploring and gaining insight from different worldviews.
(To write a word or a phrase or a sentence in Arabic is like crafting an equation, because every part is extremely precise and carries a lot of information)
Added: 2535 days ago by muslimtech
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