What Does Entanglement Mean?

I saw what i thought was a police helicopter hovering right over the car on the night. I stopped the car and looked up, but the helicopter was making no sound. The u fo explanation did not occur to me until the very last second. We don't know bat necessarily, what the reason is, but it's the same predicament in quana mechanics,. If we talk of at entanglement, oer the way, a issue, you know, schengers, cat. But these are the things i think science hasn't really confronted yet. Because what if it's true? It looks to be true, particularly entanglement - my gosh. What does that actually say