12drakon:

gravescratch:

The most dangerous thing on any planet is an eloquent maniac. 

The second most dangerous is an eloquent idiot. 

The third is a persuasive fanatic.

Gravescratch, what is good protection against the said dangers? Asking for a planet.

Common sense and critical thinking, preferably coupled with enough eloquence to succeed in verbal combat.

Failing that, noise of a volume sufficient enough to drown out any level of eloquence. And/or a bounty hunter with good aim.