Dear Sir/Madam,

I would like to take issue with some of the concluding points made in the recent Sustainable Development Commission's report which I downloaded from the Guardian website yesterday after reading the article, "No 10 adviser attacks green record". 

Point 166. The issue of sustainability is one of the central challenges of our time.

Sustainability is not just "one of the central challenges of our time", but the central challenge, since failure to achieve it will mean extinction.

Point 168. Some of the major changes and trends that are emerging in society today are fundamentally unsustainable.

This is true, but diverts attention from the uncomfortable but essential fact that much about existing society, which we are dependent on and take for granted, is also fundamentally unsustainable (e.g. individual motorisation and frequent air travel).

172. In our view, the time for more radical change is right now.

The time for radical change was 10, 20, 30 years ago. It is already too late to prevent much of the damage and suffering that our failure to address sustainability will inevitably cause. Effectively, we are still in a state of denial. The sooner we come out of it and start making the necessary changes, the less severe the approaching catastrophe will be and the better our (children's) chances of survival and recovery.