Ability to learn actually does improve work performance. Antidepressants may improve overall symptoms and reduce pain. Automation may improve sensitivity and reduce unsatisfactory specimens. Beneficial mutations can improve reproductive success. Exercise programs are beneficial with respect to activities of daily living and potentially improve dementia. Later designs did not significantly improve its accuracy. Vasopressin overall does not improve or worsen outcomes compared to epinephrine. They can also improve global coordination. If you aren't capable of learning you won't improve. Regarding effectiveness, compression dressings improve healing. However their accuracy did not significantly improve, staying under 30%. Treatments may improve symptoms and prevent worsening. Some NPCs can also improve skills by training. The conditions did not improve with time. There is a number of variations to the rules that improve accuracy.