This is done by representing each named variable with a pair of values, consisting of an upper bound and a lower bound of an interval. As long as interval arithmetic is available as an alternative, whether floating-point results are exactly reproducible or not is of little consequence. What is needed to implement interval arithmetic is to know the properties of the underlying floating-point arithmetic on any given platform. IEEE 754 compliance is the ideal environment with some minor modifications needed for interval exception handling. Some committee members agree with the authors of the article and are also of the opinion that stochastic arithmetic is several orders of magnitude more useful in practice than pure interval arithmetic.
Potential users are however, reluctant to adopt it.
The other point raised is how interval arithmetic could be efficiently standardized if the predictability deficiencies are not corrected before-hand.