During a trip to the veterinarian, Yoshiro is dismayed to learn that his Samoyed has developed type-1 diabetes. The vet explains that the dog must be given injections of insulin because its own body is not producing enough. Yoshiro tells the vet honestly that he is so squeamish around needles that he is unsure if he can even give the dog these injections. Which reasoning point would the vet MOST likely use to help Yoshiro with the situation?