Follow Slashdot stories on Twitter

 



Forgot your password?
typodupeerror
×

Comment Re:No Shit (Score 3, Interesting) 281

DRM is bad.

I was watching this recently posted video of Ray Kurzweil interviewing Robert Freitas, a "nanobot theoretician", about the current state of nanotech. Freitas suggested the use of DRM techniques as a way of preventing the malicious use of nanotechnology. Seems like a "good" application to me. There's another video of RK interviewing Eric Drexler whichh is also interesting.

Comment Re:Must be the new math (Score 1) 312

hmmmm. I mainly agree, but as a point of accuracy...

it took 1.8B years to form and even if that is off by 1/2, that means 900M years

900M is about right according to wikipedia

The thing is, for much of that time Earth would have been a ball of lava, so once it cooled down life got going quite quickly.

the right conditions would have been present in the 15M years available

The summary actually says the the universe was about 15 million years old and would have lasted several million years. So...yeh, too short for anything useful to happen. One wonders what could be cool enough after only 15B years , and do you really need something as big as a planet?

Comment Can this be right? (Score 1) 312

OK, so the heavy elements began to be manufactured after just 3 million years, but were they manufactured in large numbers?

And how long does it take for those heavy elements to disperse through the universe and then coalesce into a planet around a suitable star? Seems like it might be longer than 15 million years.

And life took 500 million years to get started after Earth formed. For sure, for some of that time the Earth was too hot for life to occur but 15 million years seems too short for anything useful to happen. Maybe some RNA and some enzymes if you're lucky, but that would be about it.

Comment Re:Pumping more efficient than desalination? (Score 4, Interesting) 273

Firstly, most of those desalination plants are already built, and second, I really doubt that getting to this water is simply a matter of "a few more pipes". Deep water oil rigs can cost Billions, plus you have to buy the rest of the infrastructure. The Sydney desalination plant "only" cost $1.08 Billion.

Comment Re:Nearest neighbour (Score 4, Informative) 213

offering bouncy rides.

When Australia was first settled a few people did indeed try it. I remember a school teacher showing us some drawings of special saddles and other stuff that people had made for the purpose. The problem is that a roo large enough to carry a human is a powerful and aggressive animal, it puts up a hell of a fight. There were at least a couple of people that somehow managed to saddle the roo and then mount the saddle, but in both cases the roo just bashed them into a tree tree or something. The first seven people to try it were all killed. I've never heard of anyone trying it since.

Slashdot Top Deals

He has not acquired a fortune; the fortune has acquired him. -- Bion

Working...