Maybe the complexity of the one we have is an indication that we haven't rediscovered it. We discovered a worse one. Maybe it will take our smartest minds another 350 years to rediscover his. If preserving data was easier in the 1600s we could just grep through Fermat's hard drive and we would know for sure!

Let's keep making preservation easier, and preserving as much as we can. Maybe much of it is worthless, but I guarantee there's at least one document we think is worthless today, that historians 500 years from now will be glad we preserved anyway.