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Harvard Biologist Admits: We Know Nothing About Brain Evolution

Science journals have featured countless much cause for pessimism in the study of
stories about the evolution of the human human origins. Science reporter James
brain. Scientists are puzzled since Randerson of Britain's Guardian newspaper
humans have much bigger brains than any was even more brunt, saying, "We know
other species. Their suggested nothing about brain evolution." Randerson
explanations have often been mutually went on to summarise Lewontin's reasons
exclusive. For instance, the old text for pessimism. "The handful of hominid
book explanation relied on eating meat fossils stretching back 4m years or so"
but a few years ago an article in New cannot tell us whether any of them were
Scientist, a popular science magazine, our ancestors. We "do not have the have
suggested that eating starch was the the faintest idea what the cranial
secret of brain growth. But both capacity [of a fossil hominid] means".
explanations fail to answer why other Moreover, we do not even know which
meat or starch eating species do not have hominids walked upright and which did
big brains. not.
At the recent AAAS (American Association Lewontin is well-known for his
for the Advancement of Science) annual outspokenness. In 1997 he wrote in The
meeting in Boston, Richard Lewontin, a New York Review of Books that scientists
distinguished biology professor at often choose to make up "unsubstantiated
Harvard University, acknowledged that just-so stories" because they "have a
stories about human brain evolution have prior commitment, a commitment to
not been based on facts. Reporting on the materialism... Moreover, that materialism
meeting for the journal Science, Michael is an absolute, for we cannot allow a
Balter quoted Lewontin as saying, "We are Divine Foot in the door."
missing the fossil record of human Obviously, the scientific community
cognition, so we make up stories." The cannot ignore Lewinton's recent
title of Balter's article seems to be an conclusions. If the ruling paradigm
admission of sorts: "How Human (naturalism or the view that nature is
Intelligence Evolved--Is It Science or all there is) leads us into a blind
'Paleofantasy'?" alley, might there be something wrong
According to professor Lewontin, it is with it?
fantasy. Lewontin suggests that there is




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