Abstract
The great variety of kinds of properties that are comprehended by such terms as “disposition,” “power,” “potential,” “tendency,” “capacity,” “propensity,” and “capability” share a common generic structure. They are ascribed to things and substances. However in all cases the basic structure of that attribution is conditional in form. To attribute a disposition to a thing or substance is to say that if certain conditions obtain, then that thing or substance will behave in a certain way, or bring about a certain effect ‐ that is, that a certain outcome will occur. A fertile soil is one of which it is true that if seeds are planted in it and properly cared for, they will grow into flourishing plants. A negatively charged particle is one of which it is true that, if brought into proximity to another negatively charged particle, it will experience a force of repulsion.