〜かは〜によって違う

Use this pattern to say that the outcome, answer, or nature of X varies depending on Y. The part before か (X) is a choice, situation, or proposition, and によって marks the factor that causes the difference. This is not a universal rule; differences arise from context, people, timing, or setting. Common Y factors include circumstances, people, methods, regions, or conditions. Examples show how the same question or statement can yield different results depending on the factor introduced by によって.