> This hypothetical archaeologist has it easy
I am not so sure of that. Even time stamps cannot be trusted very much.
For example, a lot of photo cameras, audio recorders and other such devices still don’t have a small extra battery for keeping track of time. So every time you run out of battery, or in the case of wall-connected devices you unplug them from the wall, the clock is reset and time is set to some date that the device manufacturer decided to use as the epoch for their device.
And most of these devices don’t have a GPS receiver in them either, so you need to manually set the time. And only some of them will prompt you for it directly while for others you need to remember this and go in the settings menu and adjust the time.
So I routinely get time stamps that are things like 1st of January 2008, or 2015 or what have you. And sure if you notice right away you can correct it. But even when you know you sometimes get tired of that kind of stuff so you just leave it like it is.
And that’s just at the recording stage. Then you transfer files between systems and sometimes you get the original time on your files and sometimes you don’t, and even if you did they might be wrong in the first place as per above.
And all of this is for someone who knows how this stuff works and who tries as good as they can to have proper dates on files and to keep them that way. Then you have people who don’t know and don’t notice.
And then you have people who willfully modify metadata.
And then there is the data itself. We live in a post-truth age they say.
How do you know in a thousand years that the data is from when it says it was from and furthermore that there is even a grain of truth in the data itself?
I am sure there will be competent historians that are able to learn a bit of our time from our data. But I don’t think they will have it easy.
And on top of that I don’t think data can really tell the future what life today is like. It’s hard to put in words what I mean by this last point so I won’t try to say any more about that.