List of things that blow my mind

This is a list of various concepts and ideas that I find so profound they blow my mind.

Concept	Description
Determinism	Freewill is an illusion, our choices and even our very thoughts are determined by existing events entirely outside of our control.
Emergence	Complex and unpredictable properties emerge out even the most basic rules. See Conway's Game of Life and Langton's ant.
Euler's identity	e^(i * pi) + 1 = 0. Several unrelated mathematical constants arranged in a specific order in an equation equal zero.
Evolution	If mutation exists in reproduction, a population will evolve over time.
Microscopic and Macroscopic worlds	Entire structures exist and thrive both at levels much smaller than we can see, and much greater than we can fathom.
Natural selection	Organisms capable of evolution, when in an environment with limited resources, will evolve to better utilize those resources.
Naturalism	Everything in the universe can be explained with natural laws.
Programmatic recursion	A simple function can call itself to simplify otherwise complex instructions.
Symbiogenesis	Some biological organisms evolved from initially separate organisms that developed a symbiotic relationship so compatible as to become one organism. For example, mitochondria.
Wave–particle duality	At the quantum level, matter behaves both like a wave and particle depending on whether it interacts with other matter.