I am familiar with his work. The point I was trying to make was that bubble models were originally thought to reduce overall decompression time and VPM was actually tweaked after finding it was too aggressive. I am not sure if RGBM was ever modified the same way. Many users apply GF numbers to approximate curves generated by v-planner (for example) . If you are approximating a profile that is not conservative you are not improving safety, just like diving nitrox to the limits of the EAD does not increase decompression safety.You may want to re-read Erik Baker's paper a few times and think again.