Uncertainty Principle

The uncertainty principle, also known as Heisenberg's indeterminacy principle, is a fundamental concept in quantum mechanics. It states that there is a limit to the precision with which certain pairs of physical properties, such as position and momentum, can be simultaneously known. In other words, the more accurately one property is measured, the less accurately the other property can be known. More formally, the uncertainty principle is any of a variety of mathematical inequalities asserting a fundamental limit to the product of the accuracy of certain related pairs of measurements on a quantum system, such as position, x, and momentum, p.[1] Such paired-variables are known as complementary variables or canonically conjugate variables. First introduced in 1927 by German physicist Werner Heisenberg... https://en.wikipedia.org/wiki/Uncertainty_principle

• Science philosopher Karl Popper approached the problem of indeterminacy as a logician and metaphysical realist.[101] He disagreed with the application of the uncertainty relations to individual particles rather than to ensembles of identically prepared particles, referring to them as "statistical scatter relations".[101][102] In this statistical interpretation, a particular measurement may be made to arbitrary precision without invalidating the quantum theory.... Popper sent his paper to Einstein and it may have influenced the formulation of the EPR paradox.
• There is reason to believe that violating the uncertainty principle also strongly implies the violation of the second law (entropy) of thermodynamics.[109] See Gibbs paradox.