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The whole concept of Quantum Entanglement is about correlation. What Quantum Entanglement means is that if one of the two Entangled particles are to be observed then it'll automatically determine the results for the remaining one.
To understand it better lets run through an example.
Take two qubits, Now the value of those qubits is unknown so until you don't observe one of them they're both 1 and 0 at the same time. But from the correlation you know that when observed if one bit turns out to be 1 then the other will be definitely a 0 (There is no possibility that it could be 1) Remember this correlation is just for example.
So if this was done on an ordinary binary based computer than it would have to look twice to know the value of those two qubits, Its because the remaining bit is yet unknown and its unpredictable for a binary computer, But in the case of Quantum Computer it doesn't need to look twice because at the first look it can know with the absolute certainty that what value of the remaining qubit will be. So its not magic at play here, but probability.

And so for the example in the article the 10 qubits are correlated to eachother so if a quantum computer knows value of any one of those qubits then it can predict the absolute value of remaining qubits because it understands the correlation between them.

So basically Quantum Computers can make precise predictions which makes them better than ordinary computers, And computers could be revolutionary since anything thats good at making predictions besides Quantum Computers are our brains.

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