Some maths is done just for fun/curiosity and other maths is more directed towards a specific goal. Both types of maths can end up being useful or useless (outs

Some maths is done just for fun/curiosity and other maths is more directed towards a specific goal. Both types of maths can end up being useful or useless (outside of maths, that is) and it's pretty much impossible to predict which areas are going to be incredibly useful or mere curiosities. Sometimes, the uses for obscure maths aren't even discovered for more than a century afterwards.