Abstract
In his _Sapiens: A Brief History of Humankind_, Yuval Harari claims that humans are able to
cooperate in large numbers because they share common beliefs in fictions or “things that do
not exist at all”. Examples of these fictions are religious doctrines, nations, laws, justice and
money. In my paper, I argue that Harari is right to point out the importance of social
constructs, entities that depend for their existence on the beliefs of the members of a society,
for cooperation. But he is wrong to characterise social constructs as fictions or imagined
realities. Doing so makes it difficult to distinguish between real social constructs and social
constructs that are fictitious or merely imagined. Harari tries to remedy this problem calling
fictitious social constructs lies; but this suggestion unhelpfully associates mere fictions or
imaginings with deceptive intent.