A crise bem-vinda na teoria evolucionista

EXETER - Aqueles que acreditam que um ser sobrenatural criou o universo nunca constituíram um desafio intelectual à teoria evolucionista. Mas os criacionistas, quer sejam fundamentalistas bíblicos ou crentes no “design inteligente”, representam uma ameaça ao pensamento científico. Na verdade, o talento especial traiçoeiro do criacionismo reside na sua capacidade de reinventar a evolução à sua própria imagem, como um sistema de crenças dogmáticas - e, portanto, a antítese da ciência.

Os criacionistas estão certos numa coisa: ao contrário da impressão que é dada em muito o que se escreve sobre o assunto, a teoria da evolução está em crise. Mas isto é um desenvolvimento positivo, pois reflecte o progresso não-linear do conhecimento científico, caracterizado por aquilo que Thomas Kuhn descreveu no seu influente livro The Structure of Scientific Revolutions como “mudanças de paradigma”.

Durante os últimos 70 anos, o paradigma dominante na ciência evolucionista tem sido a chamada “nova síntese”. Amplamente divulgada nos últimos anos pelo biólogo evolucionista de Oxford, Richard Dawkins, a nova síntese combina a teoria de Darwin da selecção natural com a genética mendeliana, o que explica a hereditariedade.

To continue reading, please log in or enter your email address.

Registration is quick and easy and requires only your email address. If you already have an account with us, please log in. Or subscribe now for unlimited access.


Log in

  1. Chris J Ratcliffe/Getty Images

    The Brexit Surrender

    European Union leaders meeting in Brussels have given the go-ahead to talks with Britain on post-Brexit trade relations. But, as European Council President Donald Tusk has said, the most difficult challenge – forging a workable deal that secures broad political support on both sides – still lies ahead.

  2. The Great US Tax Debate

    ROBERT J. BARRO vs. JASON FURMAN & LAWRENCE H. SUMMERS on the impact of the GOP tax  overhaul.

    • Congressional Republicans are finalizing a tax-reform package that will reshape the business environment by lowering the corporate-tax rate and overhauling deductions. 

    • But will the plan's far-reaching changes provide the boost to investment and growth that its backers promise?

    ROBERT J. BARRO | How US Corporate Tax Reform Will Boost Growth

    JASON FURMAN & LAWRENCE H. SUMMERS | Robert Barro's Tax Reform Advocacy: A Response

  3. Murdoch's Last Stand?

    Rupert Murdoch’s sale of 21st Century Fox’s entertainment assets to Disney for $66 billion may mark the end of the media mogul’s career, which will long be remembered for its corrosive effect on democratic discourse on both sides of the Atlantic. 

    From enabling the rise of Donald Trump to hacking the telephone of a murdered British schoolgirl, Murdoch’s media empire has staked its success on stoking populist rage.

  4. Bank of England Leon Neal/Getty Images

    The Dangerous Delusion of Price Stability

    Since the hyperinflation of the 1970s, which central banks were right to combat by whatever means necessary, maintaining positive but low inflation has become a monetary-policy obsession. But, because the world economy has changed dramatically since then, central bankers have started to miss the monetary-policy forest for the trees.

  5. Harvard’s Jeffrey Frankel Measures the GOP’s Tax Plan

    Jeffrey Frankel, a professor at Harvard University’s Kennedy School of Government and a former member of President Bill Clinton’s Council of Economic Advisers, outlines the five criteria he uses to judge the efficacy of tax reform efforts. And in his view, the US Republicans’ most recent offering fails miserably.

  6. A box containing viles of human embryonic Stem Cell cultures Sandy Huffaker/Getty Images

    The Holy Grail of Genetic Engineering

    CRISPR-Cas – a gene-editing technique that is far more precise and efficient than any that has come before it – is poised to change the world. But ensuring that those changes are positive – helping to fight tumors and mosquito-borne illnesses, for example – will require scientists to apply the utmost caution.

  7. The Year Ahead 2018

    The world’s leading thinkers and policymakers examine what’s come apart in the past year, and anticipate what will define the year ahead.

    Order now