Stephen Hawking on human extinction

Quote from Mav88:

You have no idea what you are talking about. There is not just 'a single percentage point of doubt' when comes to the actual numbers themselves.
I wasn't referring to the projections, I was referring to the general population of scientists. So...


The errors bars on 100 year projections are so large that it is tempting to call it junk science.
Fair enough. Which is why it's laughable to say "we're in danger of a new ice age". Particularly in light of what we know, the world is warming--ice doesn't lie.

"Preponderance of evidence" is a legal term, it has no meaning in science where countless times previously science has overturned cherished models and theories.
Not true. It is preponderance of evidence that makes the hypothesis of gravity the Theory of Gravity. A true scientist will admit of the possibility that an apple will rise when it's severed from the tree. It just has never been observed and so is very improbable.


Your economics is also based on the discredited broken window theory. Plywood sales sure are hot just before a hurricane- doesn't make things good.
I'm not a broken window Keynesian, though if money is available but not circulating, it is in fact probably better overall to "make work" than it is to have general unemployment (leaving out the finite capacity of Earth, for the moment), I'm a "new windows" or "better windows"-until-the-private-sector-gets-moving-again Keynesian, to put it in too brief a sentence.


With that, I just said I provisionally accept that we have warmed and may warm some more. Science DOES NOT say what to do about it, that's where the communists step in and tell us what to do.
Thank goodness we're at least on page two or three of the argument. It appears at least one guy around here is still on page one, ie. "is there really any warming?"


Well no, not mine yet anyway until they go after my wallet. That's not the point here though is it- we are talking about the larger world and presumably we give a damn about more than ourselves. The left's full agenda has not been implemented so what is your point? Ask the coal people about their business and the backdoor efforts to put them down.
Get a fatter wallet. That's what I do. : )
No comment on the coal industry, not the right thread for it imho.

So, what do we know? We know that CO2 has a greater heat capacity than oxygen. We know that the quantity of CO2 in the atmosphere is rising. So, we would anticipate atmospheric warming (all other things being equal, where the "anthropogenic" and "solar-genic?" argument begins) and yep, that's what we're observing. We also know, through isotope analysis, that Man is adding a significant and growing amount to total atmospheric CO2.
 
"But pollution's got CO2! It's what plants crave...!" :D

(OK not an exact comparison, CO2 does help non-C4 crops)

It's only a 13 % increase in yield with some serious limiting factors...

http://www.newscientist.com/article...l-boost-plant-growth-and-food-production.html

So let me get this straight...

You guys think that more pollution (CO2) will be good for the environment because more plants will grow with the CO2 in the atmosphere. Also, you will help to avert the next ice age because you're helping to heat up the planet...!???:eek: :confused:

No way... just come clean already... You guys are fucking with us right...!?
 
Quote from Brass:

You mean aside from the laws of probability and the size of the universe?

Do you really believe that he would besmirch his reputation as the generation's leading scientist for a few trashy headlines? If so, then you don't hold him in very high regard, do you?

You see he fooled you again.

Until scientists discover some pathway of how that life evolves from non life... there is no way to estimate the probability of life forming from non life on some other planet.

Its all pure conjecture and trashy headlines.
 
Quote from Ricter:

I guess you could call that a "local ice age". Just one more way to subtract from the total supply of arable land as the planet warms.

Local?

If the Atlantic Conveyer was ever disrupted and stopped carrying warm water from the Gulf of Mexico to the North Sea we would see northern Europe covered with a contiguous sheet of ice within a few years and the whole globe covered in a few generations if anyone was still alive to see it.
 
Quote from jem:

You see he fooled you again.

Until scientists discover some pathway of how that life evolves from non life... there is no way to estimate the probability of life forming from non life on some other planet.

Its all pure conjecture and trashy headlines.
That's the catch! Scientists have NEVER been able to create life from non-living matter. They really have no idea how life happens although they have a few unproven theories. They are just assuming that what ever happened on earth must happen elsewhere. But maybe not.
 
Quote from 377OHMS:

Local?

If the Atlantic Conveyer was ever disrupted and stopped carrying warm water from the Gulf of Mexico to the North Sea we would see northern Europe covered with a contiguous sheet of ice within a few years and the whole globe covered in a few generations if anyone was still alive to see it.
Ahh, so the melting ice could have even worse consequences. Good point.
 
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