A watched pot never boils." Armed with common sense and classical physics, you might dispute that statement. Quantum physics would slap you down. Quantum watched pots do refuse to boil - sometimes. At other times, they boil faster. At yet other times, observation pitches them into an existential dilemma whether to boil or not.
This madness is a logical consequence of the Schrödinger equation, the formula concocted by Austrian physicist Erwin Schrödinger in 1926 to describe how quantum objects evolve probabilistically over time.
Depends on who's watching, and how. To read the rest of the article, click here.