Quantum Decoherence: the bane of all quantum enthusiasts' existence. It's like your perfectly good cup of coffee - one moment it's hot and stable, the next it's a lukewarm mess.
So, what's the deal with decoherence? Why does the quantum world just have to be so... unpredictable?
Well, you see, it has something to do with measurement. You see, when you try to measure your coffee, it becomes... well, not quite what it was.
Quantum Entanglement: Where Two or More Things Are Not Quite What They Seemed
Or, if you'd like, you could try: