> Where have you used the fact that the observation of one marble affects the observation of the other? Here: "they will both be the same colour every time" >

> Where have you used the fact that the observation of one marble affects the observation of the other? Here: "they will both be the same colour every time" > Your above experiment could be done with just a simple bag and two marbles without the need to contort yourself around looking or not looking. They won't be the same colour every time, despite being able to be either colour prior to looking. But ok, I see what you're saying in the attempted fix. Thanks.