None of these quite wash. What gives the boiling frog metaphor its bite (and it's a good metaphor - that's how it got to be a cliche) is that the frog ends up dead. Unfortunately, the best analogues may be the things that really kill us: clogging arteries, growing cancers. In fact the boiling water is mortality. Every year is a degree.
Don’t Lock ’Em Up. Give ’Em a Chance to Quit Drugs.
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