Do the sciences aim to uncover the structure of nature, or are they
ultimately a practical means of controlling our environment?
In Instrumental Biology, or the Disunity of Science, Alexander
Rosenberg argues that while physics and chemistry can develop laws that
reveal the structure of natural phenomena, biology is fated to be a
practical, instrumental discipline. Because of the complexity produced
by natural selection, and because of the limits on human cognition,
scientists are prevented from uncovering the basic structure of
biological phenomena. Consequently, biology and all of the disciplines
that rest upon it--psychology and the other human sciences--must aim at
most to provide practical tools for coping with the natural world rather
than a complete theoretical understanding of it.