There was this talk ("Capability vs Sustainability") from 2012: https://www.youtube.com/watch?v=NftT6HWFgq0 https://www.youtube.com/watch?v=NftT6HWFgq0 Very n

There was this talk ("Capability vs Sustainability") from 2012: https://www.youtube.com/watch?v=NftT6HWFgq0 https://www.youtube.com/watch?v=NftT6HWFgq0 Very nearly exactly what you're describing; not sure if it's the same thing you were thinking of, or just part of a similar thought-wave at the time.