With my modification I would adjust the target from 20 to somewhere between 10 and 15.
Regardless of p/e ratio I would rather buy stocks at a peak in interest rates than at the trough they are at now. That is my only problem with the Relative Value indicator. Stocks can't be a bargain if interest rates will double.
With the current annual inflation rate (September) at 2.24 and this week's VL P/E at 20.1 it would seem that at 22.34 we are in the red zone for relative valuation. S/T are at 1.12 still below the inflation rate.
I have read your explanation regarding Elaine before but it certainly is a timely and relevant reminder. IMHO. ;o)