[sparrish]

No, defamation laws are to protect someone who is defamed (unjustly harms their reputation, and usually constitutes a tort or a crime). They are not intended to protect you from false ideas. Can you sue for defamation if I publish an essay saying there are aliens on Pluto? Is it false? Yes. Has it defamed anyone? No.

[jakelazaroff]

Yes, any suit must be brought on behalf of someone who was damaged. “Defamation” is the word for someone being damaged by false ideas.