One reason the low cost of carbon offsets might not make it feel okay to fly is if you’re trying to think about what behaviors and habits would still be acceptable in a society that is already functioning carbon-neutrally. My intuition is that as regulations become stricter and greenhouse-gas-reducing projects need less crowdfunding, carbon offset prices will rise until they equal the cost of capturing and sequestering the CO2, which is on the order of several hundred dollars per tonne. So it’s hard to imagine a future in which flying is still okay at prices even close to what they are today.
OwenBiesel
Karma: 3
Does I(w) mean the set of propositions in I that are true in world w? In other words, does I(w) equal {A∈I:w∈A}?
Or does the notion of which propositions are possible to know also depend on which world you’re in? (Could it be that A∈I(w) and w′∈A but A∉I(w′)?)