At the water or subconscious level, life is connected, so water is a key to psychic ability. When water factors are combined with fire or earth factors, individuals tend to act on the inner psychic awareness, but they may not be conscious of why they are doing what they are doing and often the action is just carrying out personal habits. Water and air combinations connect the conscious and subconscious potentials of the mind. Individuals with an air-water emphasis can more readily become conscious of the knowledge stored in or accessible to the subconscious. They may or may not do anything with the information other than register it mentally and perhaps talk about it.
Air is a spectator and commentator.
Water may just feel deeply. Fire and earth are the action elements which impact the world. At the same time, there is a natural, inherent potential for conflict between fire and earth, between the urge to keep changing and the desire for solid results in the world. The fire drive to try something new is also inherently in conflict with the water instinct to cling to the familiar past. Air can be easily combined with the other three elements and can be helpful to all of them.