At the risk of boring you,
I must quote Norbert Wiener again:
"There is one quality more important than "know-how".... this is "know-what" by which we determine not only how to accomplish our purposes, but what our purposes are to be."
Hermann Scheer covered both the how and the what in this, his last book
before his untimely death in 2010.
This legacy is a MustRead if ever there was one for all interested in energy;
rest assured, your next energy bill will make you interested !
Now finally published in English by Earthscan, London + New York 2012,
with bibliographical references and index
(which the 2010 German edition somehow lacked).