That's an incorrect explanation. I find the envelope analogy to be the clearest.
I have two cards, a red card and a blue card. I have only one of each. I put each into a totally opaque envelope. I have created an entangled pair.
I give you an envelope and you pay SpaceX a few million dollars for a trip to Mars. You have an equal probability of having a red or blue card in your envelope.
Once you settle in on Mars and recover a bit from bone and muscle density loss from six months in zero-g you open your envelope. You have the red card. You've just measured the state of the entangled pair.
You instantly know I have the blue card but your measurement didn't cause some FTL communication. Because our entangled pair had exclusive states you gain some instant knowledge of my envelope contents. While that's a cool effect it still required classical slower-than-light transmission of the envelope. I also have no knowledge that you opened your envelope until I receive your classical communication saying so.
Even if you were just across the room the information about the color of your card would still only travel at the speed of light. Even though you could instantly know the state of my card once you know yours you can only communicate that knowledge to me at the speed of light.
I have two cards, a red card and a blue card. I have only one of each. I put each into a totally opaque envelope. I have created an entangled pair.
I give you an envelope and you pay SpaceX a few million dollars for a trip to Mars. You have an equal probability of having a red or blue card in your envelope.
Once you settle in on Mars and recover a bit from bone and muscle density loss from six months in zero-g you open your envelope. You have the red card. You've just measured the state of the entangled pair.
You instantly know I have the blue card but your measurement didn't cause some FTL communication. Because our entangled pair had exclusive states you gain some instant knowledge of my envelope contents. While that's a cool effect it still required classical slower-than-light transmission of the envelope. I also have no knowledge that you opened your envelope until I receive your classical communication saying so.
Even if you were just across the room the information about the color of your card would still only travel at the speed of light. Even though you could instantly know the state of my card once you know yours you can only communicate that knowledge to me at the speed of light.