Hi. I've asked the question many times (as I'm sure many others have) why does the particle behave differently once it has been observed? Does that not mean it knows it has been observed? How does it know? The only answer I get is: "observing destroys the wave function" , but that doesn't really answer anything, it just rephrases the question. I'm probably asking the unanswerable here, but seriously, how does a lifeless object know it is being watched?