Which is more effective for playing the guitar: using a pick or using your fingers?

The effectiveness of playing the guitar using a pick or fingers depends on personal preference and the style of music being played. Using a pick can provide a crisper sound and is commonly used in rock and metal music, while using fingers can offer more control and versatility, often preferred in fingerstyle or Classical Music. Ultimately, it is up to the individual player to decide which method works best for them.