Part 2/8:
The Troll Pi Illusion suggests that if one were to inscribe a series of ever-decreasing shapes within a circle, specifically a square with corners rounded off, one could arrive at the conclusion that the circumference of a circle with a diameter of 1 is indeed 4. The basic premise is illustrated by constructing a square with a perimeter of 4, which supposedly "approaches" a circle as one removes more corners.
The illusion hinges on the idea that as these jagged shapes progress toward a circular form with infinitely small dimensions, they appear to encapsulate the essence of a circle perfectly while altering the perceived value of π.