EX-23.1 5 0005.txt CONSENT OF ARTHUR ANDERSEN LLP 1 EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report included in this Form 8-K, into Aspect Development Inc.'s previously filed Registration Statements on Form S-8 (File No. 333-11747, File No. 333-36117,File No. 333-43139, File No. 333-63047, File No. 333-37524, File No. 333-75919, and File No. 333-86939). /s/ Arthur Andersen LLP San Jose, California June 21, 2000