Comment on ``Experimental Demonstration of Violations of the Second Law   of Thermodynamicsfor Small Systems and Short Time Scales''
  The experimental verification of the fluctuation theorem by Wang et al. is explained in terms of a simple Langevin dynamics. This implies that the entropy consuming trajectories found by Wang et al. are fluctuations generated by a random force and do not violate the second law. 
S. Tasaki, I. Terasaki and T. Monnai