theory that stated survival of the fittest

This makes it fragile and susceptible to even minute environmental noise, giving rise to the difficulty of measuring the state – the measurement problem. The superposition state of a quantum particle collapses to the eigenstate b of the measured observable.

Before measurement, the entity behaves as a wave with the constituent states (in the superposition) interfering with each other. In a classical world, it can be in only one localized state. Superposition refers to property whereby a microscopic entity can exist in a general state that can be written as a probabilistic sum of all possible states. The two main features of quantum theory that are missing from the classical world are superposition and the measurement problem. How different are the quantum and classical worlds? Zurek in 2003, is one such attempt to explain how the macroscopic classical world emerges out of the quantum.

Throughout decades, scientists have tried to bridge the conceptual gap that exists while transitioning from the small to the large and vice-versa.

The large and the very small have always been at two extremes and a different set of laws are used to explain their conflicting behaviours. It is inconceivable that the pizza you are eating might have a non-zero probability of being elsewhere and not on your plate! But such seemingly bizarre possibilities are commonplace when we look at the atomic scale. What we perceive at the macroscopic level is pretty different from the behaviour of the individual microscopic particles. Quantum mechanics describes the laws and behaviour of subatomic particles a. 5 minutes read “If you are not completely confused by quantum mechanics, you do not understand it.” – John Wheeler

Theory that stated survival of the fittest