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Roger Abramson's profile photoLacerant Plainer's profile photo
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One of my favorite topics - but he's wrong about two things... the Cirolis effect and winds would require the towers he claims to be made of much stronger stuff than even concrete at 5 kms above the Earth's surface.

Love the idea of dropping down the "spider's web", but it still requires the creation of a carbon nanotube "rope". Production at today's capacity would take forever, but it can be done.
 
The nature of exponential growth suggests that by the time you have 1 space elevator, you're not far away from everyone having their own personal space elevator. +Lacerant Plainer
 
Roger, actually once you have one, the cost of space travel will decrease by orders of magnitude. Asteroid mining lucrativeness and therefore metal prices could fall with every new expedition. Check out +#ProjectSlowboat for more... I think Ted was talking about a long-standing plan we had:)
 
If he's got a six-foot length now, it's worth doing the math. Let's say you have a billion dollar budget for the cable, and the price performance drops at the same rate as solar, genomics, and Moore's Law. Once a billion dollars will buy you a kilometer of the stuff, you're only 6 doublings (6-12 years) away from a billion dollars buying you more than enough for your space elevator.
What sometimes lags a few years behind the technology is the design and funding, but 6 years is short enough timespan to attract investment if the return on investment (elevator toll for space mining industry) is there.
Since you're only flying over 1 country, I suspect you'd only need one equatorial government to approve it, though the other countries will certainly want to be involved. Some to weaponize it, some to tax it, some to stop it.
 
Well put +Roger Abramson - if you also factoring in the price of mass production, it would work out fine. I am a supporter of the space elevator, despite what it seems like.
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