On other SE sites, the correct or best answer to something such as a programming conundrum might not ever change.
But travel deals with the actual physical world and everything changes from decade to decade, year to year, and even week to week.
Prices go up and down. Good places go bad or are closed. Better new places open up. This goes for hotels, flights, even national economies!
This is not a problem in answers, but a question like "Is it safe to travel to Tohoku Japan / Tunisia" or "Is it cheap to travel in Australia" when asked at different times will tend to redirect to the previous question, but that question might have accepted answers from previous years which are no longer true. It's possible to ask a duplicate question at a different time that would not expect to get duplicate answers and all such questions would appear in web searches I assume.
Obviously it won't be a problem during the beta phase but it will be a problem for us not too long afterwards and we should think about it early.