Howling:Firearm Continuity?

I was re-watching Waters of Mars yesterday, and I noticed something. Adelaide had a sort of energy/phaser sort of weapon, that you would assume they would have in the future. The thing is though, weapons seem to devolve over the course of history. In Bad Wolf and The Parting of the Ways, which occurs after the events of WoM, they are using rifles with bullets again. The same goes for the battle between the Humans and the Hath in The Doctor's Daughter, where they are once again using rifles with bullets. Cobb even uses a revolver to shoot Jenny. Even at the end of the Universe (Utopia) they are using rifles. Any thoughts?

^ Most technology has fallen by the events of Utopia due to the collapse of the universe. As for the "devolving" technology, it seems humanity will always use bullets. In Utopia, both a bullet gun and an energy gun are used, showing they exist simultaniously throughout the time of humans. It is also possible that different parts where humans are established have different weapons. Some places use revolvers/bullets, others use energy guns and what not. Delton Menace 03:02, February 18, 2010 (UTC)