There are two kinds of problems encountered in the sciences:
descriptive problems and explanatory problems.
Descriptive problems have the form: "What?" or "How?".
Explanatory problems have the form: "Why?".
These two kinds of problems give rise to the two phases
of the scientific method:
the descriptive phase and the explanatory phase.
There are three steps in the descriptive phase:
The purpose of a science is twofold:
| Physical World | Plant and Animal World | Man and His Social Relations | God and His Relation to World and Man |
|---|---|---|---|
| Physical Sciences | Biological Sciences | Social Sciences | Theological Sciences |
| Astronomy | Geology | Botany | Zoology | Psychology | Sociology | Theology |
| Chemistry (matter) | Biology | ||
| Physics (energy) | |||
| Natural Philosophy | Moral Philosophy | Philosophical Theology | |
| ONTOLOGY (science of being) | |||
| AXIOLOGY (science of values) | |||
| EPISTEMOLOGY (science of knowledge) | |||