  Comment on recent claims by Sornette and Zhou: D. Sornette and W. Zhou,
Quantitative Finance 2 (6), 468-481 (2002); Evidence of a Worldwide Stock
Market Log-Periodic Anti-Bubble Since Mid-2000, cond-mat/0212010;
Renormalization Group Analysis of the 2000-2002 anti-bubble in the US SP 500
index, physics/0301023
