Physicists say that at a microscopic level things take on definite properties only when measured. Does the everyday world exist on its own when nobody is looking?

Options

• Of course. The world is real and objective whether or not anyone is watching
• Perception makes the world. Things take shape and meaning when we interact with them
• Abstract philosophy that changes nothing. The world is real to us because we live in it
• We cannot see the real world anyway — only the picture the brain stitches from signals