Once one begins to rely on an external device to store their memories, that device becomes one of the oldest forms of prosthetics used by any species. From carvings on wood and bone, all the way through clay tablets and ink on hide or parchment, the entirety of recorded history has been an attempt by the species to externalize its own memories. Recently paper became the medium of choice, the price for such becoming reasonable in the eyes of many, and even more recently still, the computer and all of its associated electronic brethren have grown nearly ubiquitous.
To give one's memories over to such a device is far from a unique act, but it can be a very important one. In the best of cases, memories so recorded can be retrieved by anyone with access to the device, and in times and places far from the original experience. In this way experiences themselves can be partly shared, even if it is through the limited viewpoint of the one remembering.
It should be remembered that experiences include not just the events one encounters during their lifetime, but the contributions one makes to those events. Words said and deeds done can be recorded in whole or in part as well, and can give insight into the reasons behind someone's reactions to the situation. Even better, language itself has continued growing to include ways of expressing the thoughts behind one's own actions, and those may be recorded as readily as any external account of simple happenings.