[What you will learn from this article] - How does an AI that uses "Category Theory" view cats? - Category theory also reflected in the thinking of ancient Greek philosophers - Does category theory enhance natural language? The scope of ``Category Theory,'' a field of modern mathematics also known as ``the mathematics of mathematics,'' is expanding. In addition to being used in the field of artificial intelligence (AI), it is also being applied in the humanities and philosophy. Experts say that if category theory spreads, ``it could cause a seismic shift in the thinking of the times.'' "Geometric deep learning can be extended from groups to 'categories'"...