EXHIBIT 99.1 PREDICTIVE SYSTEMS, INC. 19 West 44th Street New York, NY 10036 LETTER TO COMMISSION PURSUANT TO TEMPORARY NOTE 3T March 27, 2002 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549-0408 Ladies and Gentlemen: Pursuant to Temporary Note 3T to Article 3 of Regulation S-X, Predictive Systems, Inc. has obtained a letter of representation from Arthur Andersen LLP ("Andersen") stating that the December 31, 2001 audit was subject to their quality control system for the U.S. accounting and auditing practice to provide reasonable assurance that the engagement was conducted in compliance with professional standards, that there was appropriate continuity of Andersen personnel working on the audit, availability of national office consultation, and availability of personnel at foreign affiliates of Andersen to conduct the relevant portions of the audit. Very truly yours, Predictive Systems, Inc. /s/ Gerard E. Dorsey -------------------- Gerard E. Dorsey Chief Financial Officer