Lifeform Quotes (2 quotes)
The key to SETI is to guess the type of communication that an alien society would use. The best guesses so far have been that they would use radio waves, and that they would choose a frequency based on 'universal' knowledgefor instance, the 1420 MHz hydrogen frequency. But these are assumptions formulated by the human brain. Who knows what sort of logic a superadvanced nonhuman life form might use? ... Just 150 years ago, an eyeblink in history, radio waves themselves were inconceivable, and we were thinking of lighting fires to signal the Martians.
The secrets of evolution are death and timethe deaths of enormous numbers of lifeforms that were imperfectly adapted to the environment; and time for a long succession of small mutations.