Why do floating-point numbers even exist

http://ta.twi.tudelft.nl/nw/users/vuik/wi211/disasters.html
Why is it so hard for CPU-making Jews to implement fast arbitrary-precision arithmetic or at least fixed-point numbers?

>>11
Suggest a better approximation for real numbers in hardware if you don't like it. You have no business using something whose behaviour you don't understand: There's always ℚ.