Jewish Mathematics

http://en.wikipedia.org/wiki/George_Cantor#Cantor.27s_ancestry
>Cantor was frequently described as Jewish in his lifetime

It seems clear that Nazi Germany did severely persecute what it defined as “Jewish mathematics”. In his book “History of Mathematics: A Supplement” (Springer 2007) Craig Smorynski said: “… the change of mathematical direction … would reach an extreme in the 1930s with the nazi distinction between good German-Aryan anschauliche (intuitive) mathematics and the awful Jewish tendency toward abstraction and casuistry.

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This does not mean that I think infinity (as well as real numbers) is not an incredibly useful tool to model all kinds of systems.
Useful for whom? Of course, scammers use infinity in various ponzi schemes, promising people infinite profit. So, infinity is just a scam.