Final answer:
The guillotine was valued for making executions more humane and efficient, ensuring a quick and painless death, and equalizing the experience for all, which proponents considered a key benefit during the French Revolution and the Reign of Terror.
Step-by-step explanation:
From the perspective of its proponents, the advantage of the guillotine was that it was designed to make executions more humane and efficient. It was a device intended to equalize the experience of execution, ensuring that it was the same for all individuals irrespective of their social status, and to reduce suffering by providing a quick and relatively painless death. The guillotine became an iconic symbol of the French Revolution, mechanizing the process of execution which was previously much less consistent and potentially more painful.
During the Reign of Terror, the guillotine was used extensively, and its efficiency became a key element in the judicial proceedings at the time. Advocates believed that by streamlining and reducing the duration of executions, the guillotine could provide a deterrent against crimes while being less barbaric than other methods available at the time.