Final answer:
Hamilton argues against the idea of plurality in the executive, citing the potential for division, weakened authority, and factionalism.
Step-by-step explanation:
In Federalist No. 70, Alexander Hamilton argues against the idea of plurality in the executive. He believes that having multiple individuals in power can lead to division, weakened authority, and factionalism. Hamilton points out that when people with different opinions are involved in a common enterprise, there is always a danger of disagreements and conflicts.
He further asserts that if these disagreements were to extend to the supreme executive magistracy of a country, it could impede crucial government measures in critical emergencies and even split the community into irreconcilable factions. Therefore, Hamilton rejects the idea of plurality in the executive and advises sticking to reason and good sense instead of historical research when considering this matter.