Yes. Missing data is a huge problem with everything from genealogies and opinion polling to astronomical observations and medical treatments. We can only know what's already known and can only see what our tools allow us to see; most of reality lies beyond our reach.
Yes. Missing data is a huge problem with everything from genealogies and opinion polling to astronomical observations and medical treatments. We can only know what's already known and can only see what our tools allow us to see; most of reality lies beyond our reach.