Pragmatomite
Pragmatomite is a term used to describe a hypothetical material with properties that are directly and exclusively dictated by its perceived usefulness. Unlike conventional materials, which possess inherent physical characteristics, pragmatomite's attributes would dynamically adapt to fulfill the immediate needs or desires of its user. For example, if a user required a tool to cut, pragmatomite would instantly manifest as a sharp blade. If the need shifted to containment, it would transform into a sturdy vessel.
The concept of pragmatomite explores the relationship between utility, perception, and the fundamental nature of matter.