The "days of yore" are the "bad old days", except when we remember it fondly and consider them the "good old days". This ambiguity alone is enough to realise that today isn't better or worse than yesterday; just different. None of us knows how the day before we were born actually was, so we can only assume we understand it from what we're told by parents and teachers. Yet we don't truly understand, as we don't know the whole picture and never will. We've never smelled the smells, heard the sounds, tasted the flavours, loved the loves, hated the hates of that day. All we do is assume we understand that day, and we assume we understand it better the more information we can lay hands on.
Still it's a futile exercise. The past is what it was, today is what it is, and tomorrow is what it will be. There's no going back to understand the full story. That's why, though I find the Capa negs really interesting (yes, I too want more information to make better sense of the past, or just to satisfy my curiosity), I believe that history has limited importance to our daily life, whether on a grand global scale or in the micro cosmos that is our private lives.
The few lessons that might be gleaned from history hardly apply to our lives today. Only in the broadest, vaguest terms, these lessons apply to today. We are formed by the day before we were born but we can never be part of that day. One may try. I rather stick to today and look at the future. It's brighter over there. I assume. 🙂