Zkuq on 30 January 2016
Maybe. If he ever decides to reveal himself publicly, it's practically done. And if not and he complies to the laws of nature, given enough time, we should be able to observe him. That said, if he doesn't comply to the laws of nature, it's up to him, which means no unless he decide to reveal himself.
tl;dr: This isn't a simple yes/no question if you take all possibilities into account.
