I'm watching "where silence has lease", on BBCAmerica, and Data actually had instant mental wi-fi access to the ship's computer. He mind-Googles for a phenomenon like Nagilum's void, and turns up nothing. In later episodes, they make a big fucking deal that his quarters have a special console that can withstand his super-speed typing and reading speed. Um, he doesn't need to use his hands and eyes, he's got mind-Google!! Doy!! Then later on, when we get to "Best Of Both Worlds", he can seemingly only mind-hack the computer with hard plugs sticking into his brain. Where'd the wi-fi go!?!? Did he burn out his cellular modem? Nope, cuz in "Masks", he's linked to the transformation program without a plug, because his reactions affect the simulation. *Bling* wi-fi is back! Then it goes away again. There's a bunch of examples of downgrading like this. This is just the one that jumped out at me today.