From: Mistral mistral@centurytel.net
I'm not arguing against you seeing earlier material as definitive if you want to, just wondering if this is always the case, or if you only apply this rule to B7?
Only to B7, since it's the only series I care sufficiently about to worry over things like canonicity. Where possible, I use first mention as the baseline for deciding what constitutes canon, but there can be exceptions.
If a later episode deals in some depth with something that was previously only alluded to, then I will give more weight to the later material (eg Children of Auron and what it says about Cally's background, only briefly mentioned - and ambiguously at that - in Time Squad)
If a first mention is at odds with virtually all the rest of the series, then I'll go with the series. Eg: Spacefall referrred to detectors measuring distance in 'subsecs', whereas the rest of the series used spacials.
Also the significance of any particular point needs to be borne in mind. So Travis' remark about chasing Blake into another galaxy (Duel) has to be weighed up against the limits of travel explicitly stated in Star One. In the latter episode, this is far more plot-relevant than Travis' remark, and so wins out.
Neil