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In the NYT today, Max Roser says we need a new poverty line at $30/day.

I agree. I think we should also have poverty lines at $100, $300, and $1000/day.

More than 99.9% of the world lives on less than $1000/day. We should seek to reduce that number as far as possible.

Absolutely serious about this.

Founder, The Roots of Progress (rootsofprogress.org). I write about the history of technology and the philosophy of progress. Former tech founder.

Curious about your book and institute. How does your model factor in environmental constraints (often ignored in economic models)?

Scientist and engineer interested in Life.

Work on (GOF)AI, Agriculture, Biology, Energy, Robotics, Space---all topics climate-aware.

Anything involving human activity, really.

A common example is energy. Most economic models exclude from their input and output environmental (and uncontrollable) dimensions. New mines, offshore platform or cross-Africa pipelines are evaluated and decided upon without environmental consideration, even today.

Another example this week is train fret in Europe. European laws force countries to privatise fret now, e.g. in France, because they say it should be a competitive market. Fair enough, but then all environmental measures by the current model will be dropped as against the models focused on growth, ignoring environmental impact in their calculations.

Probably case-by-case. What's an example?