Djevv said:Just some questions: is the search for intelligent life in the universe falsifiable? It is considered science and millions are spent doing it. How do you suppose they are going to detect putative alien intelligences?
That's an easy one.
SETI is really an experiment (not a theory) that looks for evidence of intelligent alien life (evidence SETI defines as radio signals) from a small part of the universe (defined as the area of space from which SETI could conceivably detect such radio signals). So the falsifiable theory that SETI tests is there is intelligent alien life that uses and transmits radio signals in our tiny corner of the galaxy that coincides with our own time of existence and our capability to detect such signals.
SETI cannot test for alien life that exists beyond our own corner of the galaxy, or that does not transmit radio signals, or that has existed at other times in the history of the universe when we were not looking for them. So SETI is testing a falsifiable theory that has clearly defined boundaries. If SETI doesn't find an "intelligent" radio signal, this doesn't disprove that intelligent alien life exists - merely that this intelligent alien life doesn't fulfil the necessary criteria to make it detectable by the means SETI uses.