Almost all the applications we use have a lot of options. And, sometimes we even stumble across them by accident. Who’s ever heard something like “Normal user don’t even use 5% of Excel capabilities!”?
Other options, we know they exist but because the default value it’s ok (so far) we tend to forget it. It is just sitting there, waiting for the day we want/need to change it.
Few days ago I was talking with a friend that show me some “odd behavior” when working with dates on SQL Server.