Figure. 4. Plot of the function F1 = -1 - ln(P)/1000 as in (9) [and for comparison F2 = -P1/1000 (coinciding)], illustrating that this function gives only a small variation in the value of r when P varies, which is the reason for the discussed piling-up at r = -1

From

Is CMB just an Observational Effect of a Universe in Accelerated Expansion?

Arne Bergstrom

International Journal of Physics. 2013, 1(6), 133-137 doi:10.12691/ijp-1-6-1