Put two and two together

Definition

To reach a logical conclusion by combining available facts or clues; to deduce something from evidence.

Etymology

This phrase uses basic arithmetic as a metaphor for logical reasoning, suggesting that combining simple facts can lead to obvious conclusions. The expression dates to the 17th century, when mathematical literacy was becoming more widespread, making arithmetic a relatable metaphor for logical thinking processes.

Kelly Says

The brilliance of this phrase is how it makes logical deduction sound as simple as basic math, yet we all know that 'putting two and two together' in real life is often much more complex than actual addition. It celebrates human pattern recognition while gently mocking how obvious some conclusions seem in retrospect.

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