The independence of investment and finance decisions

First off I think this section might want to be linked with the section above it, due to their similarity.

THe Keynsians emphasized two variable as determinants of Investment: 1. Current cash flow (with profits as a major component) 2. The firm’s current holdings of liquid assets

This began to be questioned

firms should invest up to the point where the marginal cost of a new unit of capital is the valuation of such a unit of capital in the stock market. That valuation is the market value of the firm’s shares divided by its capital stock, called the q-ratio.