You are reading this now. I am writing it now. But the "now" when I am writing it, is the past for you as you read it. This is our constant conversation between the past and the present. All of what we know and build upon comes from the past, and we should never lose sight of that fact. When we do, we begin to imagine that we are the best thing the world has ever seen, and that we've done it all on our own. But your ability to read, to think about the things you're reading here, and to interact with ideas, all come from skills you've learned (or haven't learned) in the past. If you prefer to deny it, or imagine yourself to be much better than all who came before you, then your future self and anyone else who looks back on you, will call you the greatest fool. And they will be right.
I've heard a lot of rhetoric in recent years that intends to shut down discussion and debate by accusing someone of being "on the wrong side of history". All that really means is that you don't agree with the majority. And since when did the majority ever become right, simply by being the majority. Another way to shut someone down and attack their character is to say, "I want to move forward, and you want to stay in the past", as though all forward movement is somehow synonymous with progress. It is easy to move ahead in a wrong direction and imagine you are making progress. History is full of many examples if you want to take a look. But that is a discussion for another time.
Why do so many assume that the past itself, and the things we thought and did (or things others thought and did) should all be considered archaic and not worth doing anymore? I'm oversimplifying. Not everyone thinks this way. We would struggle to find anyone who thinks this way if they were pushed to be intellectually honest and reflect on their own argument. But the past is mostly forgotten, or pushed aside to make room for the present and its glory.
Then again, this is all one man's rant from the past that is long gone by the time you read it. And we know the past holds nothing of value. Feel free to ignore it if you want. You will return to it for help someday, even if you don't realize you are doing it. You might even remember this little exercise.