A Virgin aircraft has made a flight, powered partly by biofuel. Is this part of a sustainable future for aviation?
No. It takes a huge amount of energy to just get an aircraft off the ground. Even the light aircraft in the picture are greedy little fuel gobblers, though things are not quite so bad if you go on a long flight in a straight line.
As a means of mass transport, the days of aviation with heavier-than-air machines are numbered. In fact, I would go further and suggest that the era of cheap travel over distances of thousands of miles is just a short-lived historical aberration.
I got involved in a discussion with a Youtuber called “Philosophy all along”. This was in connection with criticism of Trump’s policy of deporting illegal migrants, which he argued would be bad for the economy as it would reduce demand. This implies that there is a need to import people to sustain demand. There is no obvious reason why a population should not be able to consume everything that the same population produces. If it can not, then something else is going on. It is a basic principle that wages are the least that workers will accept to do a job. Wages are a share of the value added by workers through their wages. The remainder is distributed as economic rent, after government has taken its cut in taxes. Monopoly profit is a temporary surplus that after a delay gets absorbed into economic rent. Land values in Silicon Valley are an example of this; it's like a gold rush. The miners get little out of it. Rent and tax syphon purchasing power away from those who produce the g...
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