They could be exclusively very advanced mechanical probes capable of analyzing Earth and sending back information to their home world. Planetary protection and back-contamination of Earth's ecosystems by ETL are very serious concerns. Because of the above reasons, and because I am now working with accredited scientists and engineers in the aerospace industry, I have chosen to remove my very speculative thesis called the Cydonia II Report. I have kept only that portion which references scientific data on magnetic anomalies. Logic is not proof.
Logic only leads to thesis.
If an archaeological site is discovered on Earth via aerial photographs or satellite images, no archaeologist in their right mind would make the types of conclusions Hoagland et al. have made regarding the Cydonia Complex on Mars without first taking an expedition there to verify what they believe they see in the images. Therefore, I have removed my Cydonia II Report until more valid scientific data can be obtained, which clearly supports such a controversial hypothesis. For all these reasons, that is why I have changed this website and do not think there is a conspiracy to cover up information regarding ETI by NASA or its contractors.