Frogs are ectothermic amphibians which means they use surrounding temperature to regulate their body temperature.
If we place a frog in a container of water and slowly heat the water, the frog will stay put while regulates their body temperature.
Unfortunately, its legs give out and it can't jump out and died in the container.
Now, what kills the frog?
Now try to see the situation in real lives. We get accustomed to terrible situations and dont realize how hot the water is getting.
So, instead of jumping, we tread water without hope of ever extricating ourselves from our troubled water.
Tht choice seems risky. Yet, some of us are slowly dying of the ever increasing hot water. We are paralyzed by the prospect of change.