> 128-bit floating point? Why exactly? What hardware out there supports this, what problems does it solve that 64-bit floats or bignums don't? Why add more intrinsic types to the type system that will need vm and library changes when you could implement them in java?

Not to mention his example of inaccurate floating point was "2.0 + 2.0 = 3.999999999999999979"

When 2.0 and 4.0 are exactly representable in both IEEE 754 float and double.