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It was previously shown that models with deformations of special relativitythat have an energy-dependent yet observer-independent speed of light sufferfrom nonlocal effects that are in conflict with observation to very highprecision. In a recent paper it has been proposed that these paradoxa ariseonly in the classical limit and can be prevented by an ad-hoc introduction of aquantum uncertainty that would serve to hide the nonlocality. We will show herethat the proposed ansatz for this resolution is inconsistent withobserver-independence and, when corrected, is in agreement with the earlierargument that revealed the troublesome nonlocality. We further offer analternative derivation for the energy-dependent speed of light in the modelused.

Comments on Nonlocality in Deformed Special Relativity, in reply to arXiv:1004.0664 by Lee Smolin and arXiv:1004.0575 by Jacob et al