Cache: What is it?

https://en.wikipedia.org/wiki/Cache

The cache stores information.
It does that so when a new visitor comes along if nothing has changed it shows the site from the cache which saves the server doing some work.
Sounds good.

But sometimes the cache can get it not quite right.
And the potential problems are not worth the tiny tiny benefits that a site with less than thousands an hour vistors gets.

Turn it off, leave it off. You’ll be fine.

Podz, what a brief, clear and elegant answer. ??