I think there are some very good reasons not to be realists about mathematical objects. What might our metaphysics of mathematics need to look like to defend nominalism?

The multiverse is wild, but scientifically very serious. What kinds of multiverses might there be, what implications might they have? Which theories in physics and mathematics entail them?

You can point at sheep, you can point at restaurants - but not at numbers. What makes maths real - if anything?