Quantum mechanics lies at the heart of many modern technologies–lasers, superconductors, many forms of computing, cryptography and so on. That’s partly because the theory is so good and well tested to mind boggling accuracy.

And yet, there is trouble at the heart of quantum mechanics and the way we should use it to understand the nature of reality. Perhaps nothing reflects this better than a survey published today by Anton Zeilinger at the University of Vienna and a couple of buddies. These guys have surveyed a group of physicists, philosophers and mathematicians about their views on the foundations of quantum mechanics.