Dementia is a state of mind where our consciousness loses reference to the present moment and drowns into the past. This happens to all of us all the time, but however in case of dementia, need to come back to present moment is not felt by mind as strongly as felt by normal people who are focused on survival. Are we saying as our need to survive( not to be taken as need to live) goes down, we begin to drown into the memories which we pushed under during our younger days and live in them? Is this lack of vision for future that we turn to past? is it lack of hope? or is it lack of usefulness which men ( and now more women) begin to experience after they are no more productive or have a need to be productive economically or socially or personally?