Any geoengineering efforts we undertake will also be a blip on cosmic timescales. Particles we put into the stratosphere will decay and either escape to space o

Any geoengineering efforts we undertake will also be a blip on cosmic timescales. Particles we put into the stratosphere will decay and either escape to space or fall back to earth. Structures we put in orbit will succumb to drag and eventually burn up in the atmosphere. If our civilization collapses in the next 200 years, the most notable thing we will have left behind is earth's sixth mass extinction event (the one we call the Holocene extinction, but ofc that name will be long forgotten in a million years). Reducing the impact of the extinction event we are causing doesn't seem like hubris to me.