It's more of a, "what is fact and what is opinion," rather than, "what is fact and what is fiction."
"9 out of 10 doctors recommend Colgate," is a fact when Colgate picks the sample of doctors. A trained eye will realize that's actually an opinion, while it's designed to represent a fact. This works because people's opinions can be shaped by presenting an opinion as a majority.
This technique is probably one of the most commonly used and it has many variants, such as, "Your child could be in danger of edibles in their Halloween candy." Technically a fact, but actually a disguised opinion.
"9 out of 10 doctors recommend Colgate," is a fact when Colgate picks the sample of doctors. A trained eye will realize that's actually an opinion, while it's designed to represent a fact. This works because people's opinions can be shaped by presenting an opinion as a majority.
This technique is probably one of the most commonly used and it has many variants, such as, "Your child could be in danger of edibles in their Halloween candy." Technically a fact, but actually a disguised opinion.