Because who needs predictability when you can have chaos?
The Uncertainty Principle, as postulated by the great philosopher, Professor Puddlesworth:
When in doubt, just shout "BUTTERFLIES!" and run away.
Or, as the great sage, Professor Peculiar, once said:
"When faced with uncertainty, just add more randomness and call it 'art'."
Other notable uncertainty principles include:
Many Worlds - The theory that every decision creates a new reality, so who needs to make choices, really?
Quantum Fluctuations - The theory that even when you're certain, you're still wrong.
And, of course, the classic:
Join us in our quest for unpredictability and abandon all reason!
Or, you know, don't. We won't judge you.