MillyR, I've clearly offended you, so I apologise - the comments I made were meant in the spirit of debate, as are the points below.
"We are all going to need to do more real work and less time sitting about thinking about stuff" - this kind of presumes that 'sitting about thinking' is not 'real work', no? Given your previous sentences, it also implies that 'sitting about thinking' is not what 'practical people' (the group in which you include scientists) do/should do in trying to solve the world's current problems. (I hope this is not a totally unreasonable interpretation of the way you expressed your post, although it is of course possible that my poor language- and possibly higher level analysis skills are letting me down again
.)
The problem that I have with this line of argument is that it is all-too-often used by policymakers to construe thinking as a waste of time and therefore a slack/inefficiency to be cut out as much as possible out of the societal productivity machine that becomes increasingly focused on the production of measurable outputs. There is a visible parallel here between attempts made to cut out blue sky thinking in science and play-time in education, and, in so far as this mentality takes over, the OP might actually turn out to be more right than I would wish her to be in her predictions.
Personally, I would fight this mentality tooth-and-nail. For starters, it rests on an extremely problematic assumption that thinking is somehow not 'doing', or that thinking is somehow not 'practical'. (To repeat the words of someone much wiser than me, 'there is nothing as practical as a good theory'.) In education, given that children think and communicate through play, this translates into the equally problematic assumption that playing somehow is not learning/not educational. Secondly, this mentality and its accompanying emphasis on performance measurement tends to produce a very short-termist orientation in the social systems it affects. This is, of course, the last attitude you want to encourage when you are trying to reorient people from profit-making towards trying to solve longer-standing environmental and social problems. Thirdly, it actually actively discourages reflexivity by not allowing sufficient time/resources that are often needed for the sort of 'wasteful' thinking that effectively move someone from instrumental (thinking about the means) to substantial (thinking about the ends) rationality.
I think the world needs as many great thinkers as it can get - I certainly don't think we have anywhere near enough, or we wouldn't be in the dire state we are in now.