Yeah, that's probably why I was fooled by the Dark Energy Disc thing, it actually sounded natural. The building thing was another story.
Here's one thing that was a mistake that fooled me... In Sonic X, 4KiRAB thought Chaos Control was the name of Eggman's base, and they made the mistake twice. Now I've never played Sonic Adventure 2, but the first time was Knuckles' "It used to be Chaos Control" in the first episode, and I didn't know what he was talking about, nor was I paying that close of attention. Now in the beginning of episode 5, Eggman said something like "That's the reason he attacked Chaos Control!" or "He invaded Chaos Control!" or "Sonic destroyed Chaos Control!" which led me to believe that his base was called Chaos Control. By the time they showed us what Chaos Control really was, I'd forgotten about the base. Then, when I rewatched episode 1, and Knuckles said, "It used to be Chaos Control", I was like, "WHA---?!"