How to treat certain of the social considerations, both positive and negative, along with the technical ones in comparative terms is not known totally. How much advancement is required in technology in order to develop a viable system is also not known totally. Establishing the energy payback flow for the total system in a complete way may be revealing to the total program as well as to identify and develop technological approaches to enhance the flow. The conduct of non-direct socio-economic investigations in concert with the more direct socio-economic and technical investigations results in a risk rating of 4 being most appropriate. Re-supply of the satellite's consumables and replacement of malfunctioned modules should be planned as both manned and unmanned remotely controlled operations, with the satellite operating as well as not operating. The propulsion and fluid transfer features of re-supply operations will no doubt result in release of material that may be deleterious to the open cathodes of the RF generators. The extent to which this may alter the design of the re-supply vehicles and/or the design of the waveguides and RF generators is not known. This leads to a risk rating of 4 being appropriate.
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