Imagine trying to function in your daily life with only one hand. If you have ever broken a finger or hand and been forced to function with one hand, you quickly realize how hard it is. Now think about a restoration tech working through an average day with one hand. It would be severely limiting. Then there is the possibility of becoming frustrated and somehow using the injured hand, which could injure it more. You get the picture. Hand injuries are very limiting.
Case in point, I’ve witnessed my wife and her sister impacted by hand irritation from the chemicals they use as hairdressers. In recent years, they have developed skin irritations from hair products they use. Some days they simply forget to put on gloves. Their skin then reacts to the chemicals, and that limits the services they can perform for the next few days.