All models are wrong; but some are useful

All models are wrong is a common aphorism and anapodoton in statistics; it is often expanded as "All models are wrong, but some are useful". The aphorism acknowledges that statistical models always fall short of the complexities of reality but can still be useful nonetheless. The aphorism originally referred just to statistical models, but it is now sometimes used for scientific models in general.

どんなに"上手い"モデルであっても完璧に現実を捉えることはできない

しかし、モデルが役に立たないといっているわけではなく、目的に応じた適切な現実の切り出しが必要ということ