Before revision:  We propose to identify downward movements larger than the critical level , explainable as subject to the power law, as URLanized states, making allowance to explaining price descends smaller than the critical level, as a random walk with the Markov property.
After revision:  We propose to identify downward movements larger than the critical level , explainable as subject to the power law, as URLanized states, and price decreases smaller than the critical level, as a random walk with the Markov property.