This means that general notions like those of the cosmological theory have to be tied to observable things or to hypothetical constructs which are measurable. (religion-online.org)
Science can not prove intuition, science can not prove alexander the great existed, or the hypothetical constructs like greed and guilt. (religion.blogs.cnn.com)
But the «Mendelian» genes beloved of evolutionary biologists are hypothetical constructs, thought of as determining some outward and visible feature of the organism. (firstthings.com)