In a team fight, why might an expert player choose to focus damage on a weaker enemy unit instead of the strongest?

In a team fight, an expert player might choose to focus damage on a weaker enemy unit instead of the strongest for several strategic advantages. A weaker enemy unit, often referred to as a "squishy" target, possesses lower health and defensive statistics compared to a "strongest" or "tanky" unit, which is built to absorb damage. The primary reason for this focus is to quickly achieve a numbers advantage. By rapidly eliminating a squishy enemy, the expert player's team gains numerical superiority, meaning they have more active units participating in the fight than the opponent. This immediate advantage translates into greater overall damage output and control for the expert's team, making it significantly easier to defeat the remaining, outnumbered enemies. Additionally, weaker units frequently fulfill critical roles such as dealing high burst damage, providing essential healing as a support, or applying crucial crowd control, which are abilities that restrict enemy actions or movement. These units, despite their low durability, are often "high-priority targets" due to their significant impact on the fight. By concentrating damage to eliminate such a unit, the expert player swiftly removes its ability to influence the engagement. For example, taking down an enemy healer prevents them from sustaining their allies, or eliminating a key damage dealer drastically reduces the incoming harm to the expert's team. This strategy also demonstrates resource efficiency. Engaging a durable, tanky unit typically requires a prolonged expenditure of abilities and resources like mana or cooldowns. In contrast, focusing damage on and swiftly eliminating a weaker unit conserves these valuable resources. This allows the expert player and their team to maintain their full strength and available abilities for the subsequent engagement against the remaining, often more resilient, enemy units, preventing premature resource exhaustion. Finally, targeting weaker units can effectively disrupt the enemy team's overall strategy and synergy. Weaker units often act as linchpins, providing critical buffs, setting up coordinated attacks, or enabling stronger allies. By removing this integral component, the expert player breaks the enemy's intended plan and synergy, making their remaining units less effective or uncoordinated and thereby increasing the expert's team's likelihood of victory.