To arrange or select items, subjects, or conditions in a way that eliminates systematic bias by ensuring each element has an equal chance of being chosen. It's a crucial method for ensuring fair and unbiased research results.
From Old French 'randon' meaning 'rush, disorder,' originally describing uncontrolled movement. The scientific meaning developed in the 20th century as researchers realized that controlled randomness was essential for eliminating bias in experiments.
Randomization seems chaotic, but it's actually one of science's most powerful tools for finding truth! By letting chance decide who gets what treatment, we eliminate all the hidden biases we don't even know we have - it's like blindfolding bias itself so it can't interfere with results.
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