How can a model can be used to develop a testable hypothesis? Conceptual models are never revised once they are made.

Conceptual models cannot be used to develop a testable hypothesis.

Conceptual models help us see how things are related and how they connect or
work together. This helps us develop a hypothesis based on changes in a variable and the corresponding response of another variable.

Conceptual models are not based prior observations and are guesses used to generate a hypothesis.