The suggested analytical treatment of R&D expenditures is less definitive, but we can make a general statement that the ROE estimate for a mature company should reflect the long term productivity of the company's R&D expenditures: productive R&D expenditures increase ROE and residual income, and unproductive expenditures reduce ROE and residual income.
Value tends to be recognized earlier in the RI approach than in other present value-based approaches. To see this, recall that with a dividend discount model or free cash flow to equity model, a large portion of the estimated intrinsic value comes from the present value of the expected terminal value. Yet the uncertainty of the expected terminal value is usually greater than any of the other forecasted cash flows because it occurs several years in the future. Valuation with residual income models, however, is relatively less sensitive to terminal value estimates, which reduces forecast error.
I read about early withdrawal penalties on IRAs/401Ks very often. Almost always with a statement of “locked up” or “can’t touch” until 59.5. I’m sure you and well informed readers as well know about SEPPs in regard to IRAs/401Ks. For those that don’t SEPPs aren’t perfect but they are a way to tap retirement funds penalty free and I will be using in the future as I have over half of my equity investments within retirement accounts. South of a mil, North of a half. Let me add that I think your blog is outstanding.

Residual income is calculated as net income less a charge for the cost of capital. The charge is known as the equity charge and is calculated as the value of equity capital multiplied by the cost of equity or the required rate of return on equity. Given the opportunity cost of equity, a company can have positive net income but negative residual income.