No. Things change, wrong becomes right and right becomes wrong. The truth can become clear and then cloudy and clear again over time.
Nothing is final, and everything changes.
Gee... I thought it was 7. See why I hate math?!
In the ultimate sense, no.
No. You can ask "What is the all-time best selling book?" and have a correct answer, but then some other book may come around and outsell it.
Anything's prone to change at anytime. Even centuries old science theories can be thrown out the window if something new pops up and defies the theory's laws.