There are many hard things in the world that we can't achieve or we have no idea of like how to make a computer processor, yes I went too far.
And some times we can't see things very close to us like we can't see our universe as a whole because we have never been and never will be that far out, yes I went too far again.
Alright as simple example. We can't see outside of our house until you have been outside or you got a picture or cameranos.
Please repost it when you find mistake.
