In a recent article [1], Beedles suggests that the valuation process for cash outflows (or negative benefits using his terminology) is, in some sense, different from the valuation process for cash inflows. This result, however, is not consistent with the assumption of perfect capital markets. Any cash outflow from one firm represents a cash inflow to some other firm(s) or investor(s). Consequently, any difference in the valuation processes for cash outflows and cash inflows will create profitable arbitrage possibilities.