N Is the Number of Detectable Civilizations in the Milky Way Galaxy

N is the number of detectable civilizations that currently exist in the milky way galaxy. A lot of these parameters are simply guesswork, but we may be able to arrive at an lgent guess as to what is the fraction of those planets on which life evolves. F i is absolutely conjectural. We have no idea of knowing, but we could put in a number just to see how it works. Ye, so i think it was developed as part of the city project. Cites search for extratorestrial intelligence.