You're right https://aviation.stackexchange.com/questions/11132/how-much-water-does-the-emirates-a380-carry-in-order-to-provide-onboard-showers https://aviation

You're right https://aviation.stackexchange.com/questions/11132/how-much-water-does-the-emirates-a380-carry-in-order-to-provide-onboard-showers https://aviation.stackexchange.com/questions/11132/how-much-... it's much less (350 KG). Elsewhere they do say the showers are marble and mirror. So extra weight. I assumed without checking there would be lots of first class passengers, got it wrong. > you don’t seem to understand what “market efficiency” means If the fossil fuels were costed appropriately, there'd likely be no flying, certainly nothing like this. So its mispriced, is what I mean.