  Are we smarter now than Socrates was in his time? Society as a whole
certainly enjoys a higher degree of education, but humans as a species probably
don't get intrinsically smarter with time. Our knowledge base, however,
continues to grow at an unprecedented rate, so how then do we keep up? The
printing press was one of the earliest technological advances that expanded our
memory and made possible our present intellectual capacity. We are now faced
with a new technological advance of the same magnitude--the internet--but how
do we use it effectively? A new tool is available on Google
(http://www.google.com) that allows a user not only to numerically evaluate
equations, but to automatically perform unit analysis and conversion as well,
with most of the fundamental physical constants built in.
