Frog on a hot plate analogy?

The 'frog on a hot plate' analogy refers to the idea that changes over time often go unnoticed if they are slow enough. The idea here is that a frog will not jump off a hot plate if it is heated slowly enough because the frog will not notice the plate is getting hotter. Even though this may not be true literally, it is often true in many other situations. Thus, the analogy has stuck.