We go to school for 15 years maybe longer and are told a lot of stuff, we read books, we read information online, we listen to others.
How much of what we read or hear do we know is really so?
Can we 100% say that something is true or not?
By questioning things, we may not end up changing our view of something, but at least we might discover some interesting alternative perspectives.
Nothing is ever cast iron true.
There are many shades to everything.