Drake equation of search for extraterrestrial intelligence: A proposal for modification in the light of Dirac’s large number hypothesis

Abstract

In the light of Dirac’s Large Number Hypothesis (LNH), we try to relate the Drake equation with the extra-terrestrial intelligence (ETI), specifically in terms of cognitive science. This argument has been drawn from the ratio of smallest time scale (i.e. 40[Formula: see text]Hz oscillation in neuronal system of brain) to the smallest timescale (i.e. the Planck time in the present universe) which provides a very large dimensionless number [Formula: see text]. Under this LNH, we emphasize on the issue of the alien equation of Drake and provide a modified version of it by considering consciousness of the ETI. Thus, the Drake equation, which basically represents a statistical conjecture with random and arbitrary values, can be related with a feasible as well as applicable background philosophy.