I think you're confusing the process of GTD with its results, namely the results of designating certain things as reference.
The increasing ability of technology to search large volumes of information means that perhaps I don't need as organized a reference system as I might have once had--for instance, as neat as those little business-card holder thingies look, I now just snap a photo of business cards and file them in Evernote, knowing I can search them whenever I need. But they get snapped into Evernote because in an instant I've received them (collect) decided they were reference (process) and put them into a trusted reference system (organize).
If anything, that increasing amount of information means increasing input, and increasing input means needing an even more rock-solid system to make sense of it all. No computer, no matter how sophisticated its search function, is ever going to look at all the information of your given situation and spit back "You need to call Fred right now." (To paraphrase David.)
GTD isn't about remembering things. In fact, it's about strategically forgetting things—getting things you don't need cluttering your mind right now out of your consciousness and into a system so that you can work with focus and intention on the things you need to handle right now.
Last edited by jesig; 08-10-2013 at 04:49 PM.
Collect. Process. Organize. Review. Do. That really is all there is to it.