The actual article is behind a paywall via Science, but this quote was particularly telling:
Just as we learn through transactive memory who knows what in our families and offices, we are learning what the computer ‘knows’ and when we should attend to where we have stored information in our computer-based memories. We are becoming symbiotic with our computer tools.
Incidentally, Google also makes the “where” easier by making you ‘feel lucky’. Also, it is telling that this article decided to pick Google, rather than the generic term ‘search engine’, as their target.