In reply to krikoman:
> And how much hydrogen is there compared to helium available as a earth's resource?
Don't backtrack just to argue. You claimed that we loose more helium than hydrogen to space. You were wrong. I corrected you. Now you want to re-cast your comment as about relative proportions so that you can paint me as wrong. Changing your point is fine, but does not give you ground to attack my earlier correction of your incorrect statement.
> More to the point how much more economical is it to produce hydrogen than helium?
At the moment, quite a lot. I have never said otherwise. I have repeatedly said that we are currently squandering helium, but that
one day in the future technology could and likely will overcome the exhaustion of natural helium resources.
> Therefore finite!! FFS!
So is everything!! FFFS!!1!!1!!1 If you want to play that game the universe may well be a finite resource. So we'll just give up then and go home.
> What complete bollocks!! We'll be independent of them because there aren't any left and we have no choice.
Perhaps, perhaps not. At the moment I wouldn't like to call it either way - will exhaustion of Helium drive the adoption of more prevalent resources, or will commercial D-T fusion or transmutation plants take over as the main source of our Helium? The history books are full of examples of natural resource consumption that was made unnecessary by technology advance rather than resource extinction.
Actually, I am going to call your entire Helium exhaustion comment both drivel and bollocks seeing as you have used those words. As you were almost totally wrong and it is not being lost to space at any appreciable rate, it is in the atmosphere. The concentration of atmospheric Helium is 0.28x that of atmospheric Neon [1], and it is commercially viable to fractionate Neon from air, so I imagine it wouldn't take much of a shift in the supply situation to do so for Helium as well.
[1]
http://scifun.chem.wisc.edu/chemweek/pdf/airgas.pdf
The thing about the now, the present, is that there is nothing special about it, no reasons to think that all progress ends here. Look back 50, 100, 500, 1000 years. People from each of those past periods will have depended upon natural resources that have been rendered unnecessary through increased energy supply and science and technology. As there is nothing special about the now, there is no reason to suspect that people 50, 100, 500 and 1000 years from now won't look back on us and make the same observations. The big difference to the people of 1000 years ago is that we now have a very strong insight into where we're going.