Due to high global demand, sand is known as a scarce and controversial resource. Jamieson’s article, ‘For Granular Geography’, starts from this premise, presenting force chains, friction, and phase transitions to illustrate production, consumption, and distribution processes of sand from upstream to downstream by means of analogies. This commentary is divided into two parts. The first section discusses how these three elements are used as analogies, with particular attention to Singapore. The second part reflects on the added value and limitations of such an approach, drawing on a specific case study of land reclamation.

中文翻译：

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沙的粒度：生产，消费和分配的类比

由于全球需求旺盛，沙子被称为稀缺和有争议的资源。Jamieson的文章“ For Granular Geography”（从颗粒状地理出发）就是从这个前提出发的，它通过类比来介绍力链，摩擦力和相变，以说明砂子从上游到下游的生产，消耗和分布过程。本评论分为两部分。第一部分讨论如何将这三个元素用作类比，特别注意新加坡。第二部分根据土地开垦的具体案例研究了这种方法的附加值和局限性。