Comments on the amplification of intrinsic fluctuations by chaotic dynamics

Abstract
The effect of intrinsic fluctuations in systems exhibiting deterministic chaos is analyzed. It is suggested that the conclusions of the recent series of papers by Fox and Keizer [Phys. Rev. Lett. 64, 249 (1990); Phys. Rev. A 41, 2969 (1990); 42, 1946 (1990); 43, 1709 (1991)] on the breakdown of the deterministic description need to be reassessed.