Thanks. This is kinda difficult to wrap my head around though. I found this passage interesting:

"By this account, there are no metaphysical or epistemological problems special to mathematics. The only worries left are the general worries about non-mathematical physics, and about fiction in general. Field's approach has been very influential, but is widely rejected. This is in part because of the requirement of strong fragments of second-order logic to carry out his reduction, and because the statement of conservativity seems to require quantification over abstract models or deductions."

I will admit that I have a problem when fictionalism requires that we regard "2 + 2 = 4" as false (also from wikipedia). All in all an interesting idea.