We argue that the two temporal cognition systems are conceptually too confined to be helpful in understanding the evolution of temporal cognition. In fact, we doubt there are two systems. In relation to this, we question that the authors did not describe the results of our planning study on ravens correctly, as this is of consequence to their theory.

中文翻译：

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一个停留在进化和历史时代的理论

我们认为，这两种时间认知系统在概念上过于局限，无助于理解时间认知的演变。事实上，我们怀疑有两个系统。关于这一点，我们质疑作者没有正确描述我们对乌鸦的规划研究的结果，因为这对他们的理论有影响。