Quantum computing firm calls 'bullshit' as scientists undermine its technology

How do you evaluate a quantum computer you just bought from D-Wave for $15 million? It's not easy, especially since no one can really understand how the machine -- with its ones, zeros and superpositioned "one-and-zeros" -- actually functions. Instead, all you can do is throw increasingly complex questions at it, and hope that it answers them quicker than a top-end classical computer.

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