EX-23 9 w46812ex23.txt CONSENT OF INDEPENDENT ACCOUNTANTS 1 Exhibit 23 CONSENT OF INDEPENDENT ACCOUNTANTS We consent to the incorporation by reference in the Registration Statements Nos. 333-00563, 333-01557, and 333-08371 of American Management Systems, Incorporated on Form S-8 of our reports dated February 14, 2001, incorporated by reference in the Annual Report on Form 10-K of American Management Systems, Incorporated for the year ended December 31, 2000. DELOITTE & TOUCHE LLP McLean, Virginia March 29, 2001