Zero-sum refers to a property of a situation in which **gain by one strictly necessitates equivalent loss by another**. In general, it's where 1 + 1 does *not* equal 2. ## Examples - You add more teams into March Madness, you still only have one winner - You buy a new computer, now your old one ceases to be as useful - You buy stocks at a good price from someone else who lost money on them **** # More ## Source - [[Myself]]