REPLY TO THE THREE DOCUMENTS AGAINST METI

摘要

This is a reply to the three other documents against METI. Some of the arguments listed in those papers were addressed in the ones in favour of METI and it is useless to repeat them here. We do not know the level of the alien technology. To be on the safe side, a moratorium on METI would imply limiting any type of human activity that can bring attention to us. If we assume that they have the capacity to come here and threaten us, then anything is possible. We have the technology to detect planets around other stars. Assuming that an alien civilisation is technologically more advanced than us then it could at least do what we do and better. It could have detected us through our atmosphere biosignature and even our industrial activities. Then we are back to the Fermi Paradox: where are they?