The twentieth century was like twenty years' worth of change at today's rate of change. - Raymond Kurzweil

You can certainly argue that, philosophically, that is not your father. That is a replica, but I can actually make a strong case that it would be more like my father than my father would be, were he to live.

So whether information represents one man's sentimental archive, the accumulating knowledge base of the human-machine civilization, or the mind files stored in our brains, what can we conclude about the ultimate longevity of software? The answer is simply this: Information lasts only so long as someone cares about it. The conclusion that I've come [...] is that there is no set of hardware and software standards existing today, nor any likely to come along, that will provide any reasonable level of confidence that the stored information will still be accessible [...] decades from now.

The speed and density of computation have been doubling every three years (at the beginning of the twentieth century) to one year (at the end of the twentieth century), regardless of the type of hardware used. ...Despite many decades of progress since the first calculating equipment was used in the 1890 census, it was not until the mid-1960s that this phenomenon was even noticed (although Alan Turing had an inkling of it in 1950).