Re-order paragraphs

a) It is a truism to say that in 21st century society science and technology are important.

b) Human existence in the developed world is entirely dependent on some fairly recent developments in science and technology.

c) Whether this is good or bad is, of course, up for argument.

d) But the fact that science underlies our lives, our health, our work, our communications, our entertainment and our transport is undeniable.