And making an aircraft that doesn't emit outrageous amounts of CO2 with equal access to everyone, irrespective of the size of their wallet, is the hardestest. B

And making an aircraft that doesn't emit outrageous amounts of CO2 with equal access to everyone, irrespective of the size of their wallet, is the hardestest. Boom doesn't solve this, so why should we praise it ? A technological progress isn't progress if it's a social or environmental regression.