Can not be altered or predicted until you observed the state of one of the entangled things. I’m sure they said light in the article. The only thing you can be sure of is the other particle would be in the opposite state of the one you observed but the other observer would not know that until they observed it themselves. This opens up the Dachshund on a dark desert highway cool wind in my shirt possibility for quantum computers. Never thought this would be proven. Our universe is astonishing. Einstein didn’t believe in quantum entanglement and died before it was ever proven. What quantum entanglement means for reality is absolutely mind-blowing!