Before revision:  This dynamic effect becomes stronger than the well-known "precautionary" effect related to uncertainty of a social planer in future growth rates of consumption in the relatively near future, which has been estimated here as about 100 years from now (the lower boundary).
After revision:  This dynamic effect becomes stronger than the well-known "precautionary" effect related to uncertainty of a social discount curve at the time horizon estimated here as about 100 years from now (the lower boundary).