Plausible deniability ~= source of reasonable doubt in a jury case, which criminal cases fundamentally are. The bar to convict is "beyond a reasonable doubt".

Plausible deniability ~= source of reasonable doubt in a jury case, which criminal cases fundamentally are. The bar to convict is "beyond a reasonable doubt". It's not as far a stretch of a colloquialidm as you think, though I'd second your caution around ever relying upon it as a legal strategy, as you have no guarantees that your jury will see plausible the same you do.