"Airliners are mostly aluminum. Aluminum has well-understood properties, including flight. So if an airliner stops flying we can fix it by filtering out whateve

"Airliners are mostly aluminum. Aluminum has well-understood properties, including flight. So if an airliner stops flying we can fix it by filtering out whatever impurity was responsible." Sounds nonsensical to you? Good. Because that's about how reasonable your "the body is mostly water" thesis sounds to someone with a biomedical background.