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Carl Sagan tinha preocupações sobre o futuro da humanidade, e um de seus "pesadelos" era a possibilidade de a ignorância, intolerância e falta de compreensão científica prevalecerem. Ele temia que a sociedade pudesse seguir caminhos perigosos se não valorizasse a ciência, a razão e a educação, o que poderia levar a decisões prejudiciais e consequências negativas para o nosso planeta e para a humanidade como um todo.
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