gaps, missing areas of information, the memex isn't quick automatic, the iphone not the handle knowledge navigator, yet, but still need someway to integrate any information, inboxes, store, process, retain, purge, and repeat, keep things moving towards the top, extraneous info fluttering down, and the constant weeding process of good and bad, timely and unnecessary facts and figures, like panning for gold, and throwing giants shovelfuls of dirt into a machine, and out comes a little gold, a couple flakes, the only useful information. a screener. a screen. a filter, hepa, or otherwise.