An axe is a tool with a sharp edge used for chopping wood or cutting through hard objects.
You probably know what an axe looks like - it's that big, heavy thing with a handle and a blade. But did you know how often people use it? You might see someone using an axe to chop wood for a fire in their backyard, or on a camping trip. An axe is also used in construction to cut through metal pipes or thick wooden beams. Some people even use axes as sports equipment, competing in events like chopping logs quickly and accurately.
A tool for felling trees or chopping wood etc. consisting of a heavy head flattened to a blade on one side, and a handle attached to it.

Because in Axelrod's tournament, every strategy played against every other strategy, or they only interacted sort of with their near neighborhood, which is, you know, the small cluster.
26:22But in 1980, Professor Robert Axelrod found that if you play your opponent hundreds of times, well then, cooperation wins out.
25:44