Ra says that the transition to 4d could take from 100-700 years. There are 600 years of difference all of this because of volatility of the society.

I am not sure about the significance of the first 100 years from 1981. It is a number that is given. 100 years.

there are about 66 years left for those 100 years. that is the minimum they saw for the transition to occur.

This means several things. Could mean many more i am totally unaware of.

Means for example that in 66 years there cannot be 3d entities here if transition is to occur in 100 years lets say. Means that yellow ray must be totally potentiated (not active). However, before that 3d incarnations must have ceased. If 3d entities are born now they could be alive over 66 years from now. So if a transition must occur (in 100 years for 1981 --the earliest) mostly in order to be compatible, the existing 3d entities must be dual activated.

The question is how is it possible it could take 600 more years ? If minimum transition starts at about 66 years from now. What does it mean for the yellow sphere of 3d ?