After using the image of a plant stem cut transversely, Ferdinand de Saussure illustrates the difference between langue and parole using this activity.
Benjamin Hale edited a collection of philosophical essays about this activity. This activity inspired a philosophical treatise beginning "It is an old reflection that life is a struggle," entitled simply Struggle. Benjamin Franklin wrote an essay entitled The Morals of [this activity]. The question "What is a word really?" is analogized to a question about this activity in (*) Wittgenstein's Philosophical Investigations. The logician and Taoist philosopher Raymond Smullyan is also known for writing about this activity. After using the image of a plant stem cut transversely, Ferdinand de Saussure illustrates the difference between langue and parole using this activity. The first paragraph of Benjamin's Theses on the Philosophy of History analogizes historical materialism to a robot performing     this activity. For 10 points, name this ancient board game.
Benjamin Hale edited a collection of philosophical essays about this activity.
chess