Quantum mechanics is famous for its strange and often counterintuitive ideas. At very small scales, particles do not behave like everyday objects. Instead, they can exist in multiple states at once, a concept known as superposition. Physicists describe this behavior using a mathematical object called a wavefunction. Yet this picture clashes with what we observe in daily life, where objects occupy one definite place or state at a time. To resolve this, scientists usually propose that when a quantum system is measured or interacts with an observer, its wavefunction collapses into a single outcome. Now, with support from the Foundational Questions Institute, FQxI, an international group of physicists has taken a closer look at alternative explanations known as quantum collapse models. Their findings suggest these ideas could have surprising consequences for how time itself behaves, including tiny limits on how precisely it can be measured.…