An improvement on land is any structure, usually privately owned, erected on a site to enhance the value of the property. An improvement to land is usually a publicly owned structure, such as a curb sidewalk, street or sewer.
The act of making profitable use or applicaton of anything, or the state of being profitably employed; a turning to good account; practical application, as of a doctrine, principle, or theory, stated in a discourse.
A focus on sustaining and renewing the development of individuals and the organization (with a time horizon from months to decades) that requires a need for experimentation and innovation with results that are difficult to quantify. Usually it entails long-term, complex outcomes.
A (potential) improvement from future X for a group of parties G is a distinct future Y that is (a) reachable from X by G and (b) potentially preferred to X by G. Doubts are created by perceived improvements from a position or a threatened future.
An activity undertaken based on strategic objectives such as reduced cycle time, reduced cost, and customer satisfaction. This includes improvements directly in mission activities (production, design, testing etc.) and/or in support activities for the mission.
Characters can improve some traits and abilities by spending advancement picks to acquire them more than once. Unless the description of a trait or ability specifically says it can be improved, your character can acquire it only once.