Mind slowly imploding over 'beyond'

[onceinagoldenmoon]

Can someone please explain and use the word 'beyond' in a sentence.

It's a word which, if you can't replace it with "within" and still make sense, isn't being used properly. IMHO.

It's beyond belief.
The road lies beyond those fields.
I live in the back of beyond.

maybe I am missin sumfink

I'd say it's used as a synonym of 'further than'. In any sense, literal and figurative.