Aquamarine said:
Today the particle accelerators and and space telescopes often requires the pooling of the resources of many nations. Another effect seems to be increasing lead time before the experiments can start.
I have several points to make here, because it is something that comes up regularly. Experimental physics has often been on the verge of what is technologically feasible (because that's where new stuff can happen ! Otherwise it would already have been "on the verge of what is technologically feasible" in the past), and because technology advances, more complex, big, "expensive" experiments simply become possible. The space telescope (even a smaller one) was NOT possible, even with the largest budget in the world, in the 1960ies for instance. The LHC collider wasn't possible in the seventies, even if we tried. It is only now that the DEVELLOPMENT of the technology becomes possible. And that's what I would like to stress: even if the ultimate goal of these big
science projects are about fundamental science (and rightly so), most of the money is in fact for TECHNOLOGY DEVELLOPMENT. It is not that the technology now commercially exists, and that you simply place a huge order for billions of $. No, it becomes possible to *devellop* the technology. So, I repeat, a big, big part of the money is for develloping new technology, of which an important part will get more mundane spinoff.
So if you subtract that "return on investment" from the initial cost, I think that the *absolute cost* for the fundamental scientific information you get out is pretty low (or even negative !).
The next point I'd like to make is that, even though the numbers of certain scientific projects might seem large, they are still a tiny scratch on the surface of the total economy. Look at something like the Hubble space telescope: Earth made ONE such a thing, it has been working for what, 10 years ? I don't know the numbers, but if you distribute the cost of this telescope over the Earth's GNP summed over 10 years, it is peanuts. And it brought us on the scientific side an unestimable value.
It is ironical that it could still work for 5 more years if NASA spent ONE shuttle flight to it, but they won't because they need all the flights to get the garbage out of that third rate disney resort called ISS where the main mission of the astronauts is to survive until the next crew comes in and where the main technology advance is to get a better vacuum cleaner in the loo.
Finally a third point is that these big
science projects do have a great value on the pedagogical side, which is also very hard to convert in $$. It is a great adventure to go, as a student, into such a big international collaboration. You have the opportunity to become a bit more a "world citizen". Also, you have the advantage of learning from others, who didn't go through the same system and professors and all as you did. So you really learn a lot. As most students going through such a collaboration will not stay in the field, they then bring this oxygen to wherever they will go in their later life.
cheers,
Patrick.