unaired pilot of dollhouse ....do not watch

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i was told about dollhouse and when i watch a programme i have to watch it from the beginning i can't just join in where they are up to on the tv, so i watched episode 0 the unaired pilot which was great but i'm not on the 4th episode and i now realise that the unaired pilot was made up of several scenes from all the episodes in the season which has made me confused