Quantum mechanics suggests that observers can influence the outcomes of measurements. If that's the case, then do these observers need to be conscious? Does consciousness play a special role in physics at all?
We talk to David Wallace, a philosopher of physics at the University of Oxford, and Adrian Kent, a theoretical physicist at the University of Cambridge, about two of the great mysteries in science - consciousness and the measurement problem.
Explore more about the role of observers in physics with this package of articles and videos.