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Lucy Chen edited Consider_trying_to_understand_Frank__.tex
almost 8 years ago
Commit id: 39fb210911872d6be42f22ef5a0259606d06e368
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Consider trying to understand Frank Drake's \textbf{Fermi Paradox} which estimates the number of technological civilizations that might exist among the
stars. stars.\\
($R$ is the annual rate of star formation, $n_e$ is the average number of habitable planets, $f_p$ is the fraction of stars that have planets, $f_p$ is the fraction of stars that have planets, $f_l$ is the fraction of habitable planets, $f_i$ is the fraction of life-bearing planets that develop an intelligent life-form, and $f_c$ is the fraction of intelligent life-forms that decide to communicate)
\begin{equation}\nonumber
N =\underbrace{\overbrace{R}^{\approx10} \times \overbrace{f_p}^{\approx 1} \times \overbrace{n_e}^{\approx 0.2}}_{\sim 2} \times \underbrace{f_l \times f_i \times f_c \times L}_{?}
\end{equation}