Corrected entry: It's been nearly 3 years since anyone was last in The Initiative, given that it was blocked off at the end of season 4. Shouldn't the corpses be a lot more decomposed?
Corrected entry: We're told that Molly and Rona are fighting over who gets to drive since Giles doesn't have a California driver's licence. But since Molly and Rona are only 15 (as stated in "Potential"), neither of them would have drivers licences either. Even if you take the statement of their age to be slightly inaccurate, Molly (who is also from England) wouldn't have any kind of a driver's licence until she was 17, let alone a licence valid in California.
Correction: In the US, one can obtain a Learner's Permit at the age of 14 after passing a written test (The practical test to obtain the actual licence is taken at 16.), allowing one to drive if a licenced driver is in the vehicle. Giles' English licence would be sufficient in this case if they were pulled over.
Corrected entry: Willow tracks down her old Wicca group when she needs help reversing a spell, but seems surprised that they're competent spell casters now (since the last time she saw them Tara was the only one with any kind of power). But if she's so surprised to find this out, why did she go to them? (as opposed to calling the coven in Devon or trying to contact Giles).
Correction: She's probably hoping they can direct her to someone who can help her.
Corrected entry: In Season 7, Ep 13 'The Killer In Me,' Buffy and Spike go to the long-abandoned Initiative to find information on Spike's backfiring chip. Only problem is, in Season 4, Ep 21 'Primeval,' government officials decided to have The Initiative facility filled in with concrete.
Correction: Doesn't mean it was actually done - this is the government, after all. Besides, The Initiative facility was enormous, so filling it completely would be a huge project. It seems more likely that they would simply concrete up the entrances, leaving the actual facility intact but inaccessible.
Correction: The complex is airtight. This would significantly slow the process of decomposition.