Tuning, or adjustment, refers to the process of modifying a system or device to achieve optimal performance. This can involve fine-tuning various parameters to ensure that everything operates smoothly and efficiently. For example, in music, tuning a guitar involves adjusting the tension of the strings to reach the correct pitch. In technology, tuning can apply to software or hardware systems, where settings are adjusted to improve speed, accuracy, or functionality. This process is essential in fields like automotive engineering, where tuning a car's engine can enhance performance and fuel efficiency, ensuring that the vehicle runs at its best.