Thanks for your comments. Unfortunately humankind does not have a leisurely 65 years to scale down its population. This is the hard part to contemplate for most people who have not spent yet much time collecting and analysing the data. No transport, no food, then a decline transforms abruptly into a collapse. It has happened before but only in localised fashion. This time round the threat is global. The time horizon as far as we can see is 10 years, 15 at most, not 65 years. Unless enough people wake up now, I expect the next 10 years to be pretty tough. In my view,the wealthiest are the most endangered as they are mostly sleep walking into this and are very ill equiped to cope.