A leading scientist explains why the fundamental truth is that it is impossible to know everything about the universe
The American physicist Richard Feynman thought that “nobody understands quantum mechanics”. That is no longer true. Smartphones, nuclear plants, medical scans and laser-operated doors have been built with insights from the physics that governs the subatomic level. What perplexes many is that the quantum world is governed by rules that run counter to classical notions of physical laws.
In quantum mechanics, nature is not deterministic. Subatomic particles do not travel a path that can be plotted. It is possible only to calculate the probability of finding these specks at a particular point. Where such calculations leave physics, that hardest of the hard sciences, has troubled its greatest minds. Albert Einstein thought the idea that an element of chance lay deep in science was absurd. “God does not play dice,” he famously declared.
