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Free lunch?
No free lunch theorems for optimization
Macready, W.G.: No Free Lunch Theorems for Optimization. IEEE Transactions on Evolutionary Computation 1(1), 67-82
No free lunch.
No Free Lunch Theorems for Search
The Free Lunch Is Over: A Fundamental Turn Toward Concurrency in Software
No free lunch in data privacy
The effects of pharmaceutical firm enticements on physician prescribing patterns. There's no such thing as a free lunch.
IS THERE A FISCAL FREE LUNCH IN A LIQUIDITY TRAP?
Composite end points in randomized trials: there is no free lunch.