Clearly, the poet and philosopher Paul Valéry was right: “The future, like everything else, is no longer what it used to be.” But we should not make fun of Marx’s well-known prediction error.
显然，诗人兼哲学家保罗·瓦勒里（Paul Valéry）是正确的：“未来和其他所有东西一样，不再会与昨日相同。”但我们不应该哂笑马克思的著名的错误预言。毕竟，物理学家尼尔斯·玻尔（Niels Bohr）讽刺性地指出：“预言是困难的，特别是对未来的预言。”