"That's so random" is a common saying people use when they see or experience something unexpected. But as a concept in physics, true mathematical randomness has long proven elusive — until now. A team of computer scientists using quantum computing methods has, for the first time, generated a truly random number, they report in the journal Nature.
By now you’re asking yourself, what is “true randomness,” anyway? Doesn’t choosing a number between, say, one and a trillion, count as truly random?
Physicists would say “no.” Every existing seemingly random task still operates under physical or mathematical rules.