Definition of "fictionalism"

But it seems to me that modal fictionalism is also incredible: normally we do not think that there are countless theories and stories besides the ones we will ever tell, much less that they are infinitely complex and infinitely long and so that it would be humanly impossible to tell them.

2007 July 17, Chris John Daly, “Fictionalism and the attitudes”, in Philosophical Studies, volume 139, number 3