The document discusses two concepts from Shakespeare's time - the Great Chain of Being and the Wheel of Fortune. The Chain of Being supported a hierarchical social structure where everyone had their proper place, while the Wheel of Fortune represented the fickle nature of fortune and how fortunes could rise and fall. These concepts are linked to Macbeth, where his ambition causes him to abandon his place on the Chain and throw himself onto the Wheel. Scholars debate whether Macbeth's actions represent an exercise of free will or whether he is driven by fate in the form of the Weird Sisters.