[From
here]
The disorientation that came when he crossed through a door was getting easier to accommodate, with the Doctor bracing himself for a shift in perception and trying to keep steady, but it was still difficult to fully anticipate. The sensation that came with teleportation seemed to be different every time.
The Doctor stumbled a few steps into the room, glancing back to make sure he and Dean hadn't been separated before looking around the room they'd ended up in this time. It was a little messy, like it had been used earlier that day and not tidied up afterward, with chairs pulled away askew from desks and what looked to be demonstration props left laying out.
"What have we here...?" he wondered aloud, the light from his torch focused on one of a number of computers. It didn't look like this was a doctor's office-like the one Brainiac 5 had gotten his computer from-but the number of computers alone could prove useful for parts. Turning one on to see if it, unlike the television from before, would prove useful was sorely tempting...
Well, while they were here, he might as well. The Doctor headed for the nearest of the computers, turning it on and waiting for it to boot.