An accessible introduction to core concepts in evolution for lay
readers, which shows that random events have played a critical role in
the development of life Critical historical events--or turning
points--have shaped evolution and continue to have a decisive effect on
individual lives. This theme is explored and explained in this lucid,
accessible book for lay readers. The author argues that, although
evolution is the result of unpredictable events, these events have
profound influences on subsequent developments. Life is thus a
continuous interplay between unforeseeable events and their decisive
consequences. As one example, the author cites the fusing of two
chromosomes, which differentiated the human species from our closest
animal relatives about 4 to 5 million years ago. This event was not
predictable, but it had a profound effect on the evolution of our
species thereafter. By the same token, certain unpredictable
circumstances in the past enabled only Homo sapiens to survive to the
present day, though we now know that other human-like species also once
existed. The author contrasts such scientific concepts grounded in solid
evidence with prevalent misconceptions about life: specifically, the
religious notion that there is a plan and purpose behind life, the
widespread perception that intelligent design governs the workings of
nature, the persistent belief in destiny and fate, and the attribution
of an overly deterministic role to genes. This excellent introduction
for laypersons to core ideas in biology goes a long way toward
dispelling such misconceptions and presents current scientific research
in clearly understandable, jargon-free terms.
