Well it's not that weird to say "no, FTL travel is impossible" compared to the alternative "FTL travel is possible". The prevailing theories clearly say it's no

Well it's not that weird to say "no, FTL travel is impossible" compared to the alternative "FTL travel is possible". The prevailing theories clearly say it's not; why would scientists proclaim anything contrary to that? Of course they want as much as anyone to prove the current theories wrong, but it would still be negligent to go around saying anything other than what the theories actually say to the laypeople.