This is an old children's story that often applies to peoples' opinions.
There once was a group of mice living in a house. There was also a cat in that house. The cat liked to chase, pounce on, and eat the mice.
One day, one of the mice came up with an idea. "The basic problem is that the cat is just so silent. What if we were to put a bell on the cat? Then we could hear the cat coming and run away. We could thus run around the house much more safely."
The other mice all, of course, agreed that this was a really good idea.
There was unfortunately one problem with this idea. Who's going to put the bell on the cat?
The mice never did come up with an answer to that dangerous problem.