FOLLOW-UP: CFO Magazine - A losing formula -- The cost of capital formula is theoretically sound but how easy / difficult is to implement in practice?

FOLLOW-UP: CFO Magazine - A losing formula -- The cost of capital formula is theoretically sound but how easy / difficult is to implement in practice?

This is an article from the CFO magazine dealing with the practical difficulties of implementing the cost of capital formula.

http://ww2.cfo.com/banking-capital-markets/2009/05/a-losing-formula/