> They cannot both be the original Riker We don't experience the future, which means our sense of continuity can only be a result of something in the present a

> They cannot both be the original Riker We don't experience the future, which means our sense of continuity can only be a result of something in the present and/or the past. That isn't violated by teleportation or duplication. When two copies step out of a duplicating teleporter, they are both a continuance of the same person. The "original" Riker is the original in the same sense as you exactly one moment ago are the origin of you in this moment.