I find it a most intriguing and amusing thing that it might be possible to package the experiences, not only of one's self, but of other people.I have tried to imagine ... the various ingredients one might wish to compound in such a package. Beside the bare experience itself, the context of it, one might say, he should want to capture and hold all the subsidiary factors which might serve as a background for it — the sound, the feel of wind and sun, the cloud floating in the sky, the color and the scent. For such a packaging, to give the desired results, must be as perfect as one can make it. It must have all those elements which would be valuable in invoking the total recall of some event that had taken place many years before...
Clifford D. Simak