Fantom's consensus mechanism, Lachesis, is a novel aBFT (asynchronous Byzantine Fault Tolerance) algorithm, meaning it's designed to achieve consensus even with some faulty nodes without relying on strict synchrony.
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Julia's creators initially aimed for it to be a language for high-performance numerical computing, but its general-purpose capabilities have led to its adoption in many other fields.
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PostScript's page description language was initially designed to control the output of laser printers, not to be a general-purpose programming language, but its Turing completeness made it surprisingly versatile.
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