It is very possible to have a two way stargate, the technology would just be slightly altered, it would be no problem. Yes, the ancients did just choose to build the gates this way. The rings use diffrent technology, they convert matter into energy as well but they are based on diffrent technology, they are only for short range transports, they don't need a wormhole, and they were designed to transmit both ways.
Owen Macri
Owen Macri
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