Charles M. Linke, Regulation of Interest on Deposits: an Historical Review: Discussion, The Journal of Finance, Vol. 22, No. 2, Papers and Proceedings of the Twenty-Fifth Anual Meeting of the American Finance Association, San Francisco, California, December 28-30, 1966 (May, 1967), pp. 297-299

The mathematical difficulties encountered when attempting to express the internal rate of return (IRR) of a combination of two or more investments as a weighted algebraic sum of the individual investments' IRRs has been recognized in the financial literature for some time. However, in a recent issue of this journal, Professors Reilly and Wecker (hereafter R-W) [3] apply the well-known mathematical impossibility of expressing the root(s) of a polynomial as an algebraic combination of the roots of related polynomials to question the validity of the weighted cost of capital (kw) concept.

The dynamics of innovation in industry dominant designs and the survival of firms product innovation as a creative force innovation and industrial evolution innovation in non-assembled products differences in innovations for assembled and non-assembled products invasion of a stable business by radical innovation the creative power of technology in process innovation innovation as a game of chutes and ladders innovation and corporate renewal.