each observer within any universe having no knowledge of what goes on in the other universes. Free will Some scientists including Arthur Compton and Martin Heisenberg have suggested that the uncertainty principle, or at least the general probabilistic nature of quantum mechanics, could be evidence for the two-stage model of free will. One critique, however, is that apart from the basic role of quantum mechanics as a foundation for chemistry, nontrivial biological mechanisms requiring quantum mechanics are unlikely, due to the rapid decoherence time of quantum systems at room temperature. Proponents of this theory commonly say that this decoherence is overcome by both screening and decoherence-free subspaces found in biological cells. Thermodynamics There is reason to believe that violating the uncertainty principle also strongly implies the violation of the second law of thermodynamics. See Gibbs paradox. See also Afshar experiment Canonical commutation relation Correspondence principle Gromov's non-squeezing theorem Discrete Fourier transform#Uncertainty principles Einstein's thought experiments Heisenbug Introduction to quantum mechanics Küpfmüller's uncertainty principle Operationalization Observer effect (information technology) Observer effect (physics) Quantum indeterminacy Quantum non-equilibrium Quantum tunnelling Physics and Beyond (book) Planck length Stronger uncertainty relations Weak measurement Notes References External links Matter as a Wave – a chapter from an online textbook Quantum mechanics: Myths and facts Stanford Encyclopedia of Philosophy entry Fourier Transforms and Uncertainty at MathPages aip.org: Quantum mechanics 1925–1927 – The uncertainty principle Eric Weisstein's World of Physics – Uncertainty principle John Baez on the time–energy uncertainty relation The certainty principle Common Interpretation of Heisenberg's Uncertainty Principle Is Proved False Quantum mechanics Principles Mathematical physics Inequalities Werner Heisenberg Scientific laws 1927 in science 1927 in Germany