These are the most frequently used words in another edition of this book.
advantage
altruism
animals
another
behaviour
best
better
between
body
books
brain
cannot
change
children
come
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does
even
evolution
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example
experience
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know
language
life
likely
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long
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may
means
memes
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might
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need
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now
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own
people
person
point
power
process
question
religions
replicator
say
second
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selection
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sense
sex
should
social
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spread
story
successful
system
take
theory
things
think
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time
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words
work
world
years