Full Idea
The fictionalist offers the option that your simulated beliefs and assertions may be tracking a realm of genuine facts, or a realm of what you take to be facts.
Gist of Idea
Fictionalism allows that simulated beliefs may be tracking real facts
Source
Stephen Yablo (Go Figure: a Path through Fictionalism [2001], 13)
Book Reference
Yablo,Stephen: 'Things: Philosophical Papers vol. 2' [OUP 2010], p.197
A Reaction
This means that fictionalism does not have to be an error theory. That is, we aren't mistakenly believing something that we actually made up. Instead we are sensibly believing something we know to be not literally true. Love it.