Take movement for example. Forces acting up, down, or from side to side. You make theories to explain it all, but you might well remember that it was… - James Burke

A ritual wouldn't be much of a ritual if you didn't feel like you've been put through the wringer, would it?

So, in the end, have we learned anything from this look at why the world turned out the way it is, that's of any use to us in our future? Something, I think. That the key to why things change is the key to everything. How easy is it for knowledge to spread? And that, in the past, the people who made change happen, were the people who had that knowledge, whether they were craftsmen, or kings. Today, the people who make things change, the people who have that knowledge, are the scientists and the technologists, who are the true driving force of humanity. And before you say what about the Beethovens and the Michelangelos? Let me suggest something with which you may disagree violently: that at best, the products of human emotion, art, philosophy, politics, music, literature, are interpretations of the world, that tell you more about the guy who's talking, than about the world he's talking about. Second hand views of the world, made third hand by your interpretation of them. Things like that [art book] as opposed to this [transparency of some filaments]. Know what it is? It's a bunch of amino acids, the stuff that goes to build up a worm, or a geranium, or you. This stuff [art book] is easier to take, isn't it? Understandable. Got people in it. This, [transparency'] scientific knowledge is hard to take, because it removes the reassuring crutches of opinion, ideology, and leaves only what is demonstrably true about the world. And the reason why so many people may be thinking about throwing away those crutches is because thanks to science and technology they have begun to know that they don't know so much. And that, if they are to have more say in what happens to their lives, more freedom to develop their abilities to the full, they have to be helped towards that knowledge, that they know exists, and that they don't possess. And by helped towards that knowledge I don't mean give everybody a computer and say: help yourself. Where would you even start? No, I mean trying to find ways to translate the knowledge. To teach us to ask the right questions. See, we're on the edge of a revolution in communications technology that is going to make that more possible than ever before. Or, if that’s not done, to cause an explosion of knowledge that will leave those of us who don't have access to it, as powerless as if we were deaf, dumb and blind. And I don't think most people want that. So, what do we do about it? I don't know. But maybe a good start would be to recognize within yourself the ability to understand anything. Because that ability is there, as long as it is explained clearly enough. And then go and ask for explanations. And if you're thinking, right now, what do I ask for? Ask yourself, if there is anything in your life that you want changed. That's where to start.

The question is in what way are the triggers around us likely to operate to cause things to change -- for better or worse. And, is there anything we can learn from the way that happened before, so we can teach ourselves to look for and recognize the signs of change? The trouble is, that's not easy when you have been taught as I was, for example, that things in the past happened in straight-forward lines. I mean, take one oversimple example of what I'm talking about: the idea of putting the past into packaged units -- subjects, like agriculture. The minute you look at this apparently clear-cut view of things, you see the holes. I mean, look at the tractor. Oh sure, it worked in the fields, but is it a part of the history of agriculture or a dozen other things? The steam engine, the electric spark, petroleum development, rubber technology. It's a countrified car. And, the fertilizer that follows; it doesn't follow! That came from as much as anything else from a fellow trying to make artificial diamonds. And here's another old favorite: Eureka! Great Inventors You know, the lonely genius in the garage with a lightbulb that goes ping in his head. Well, if you've seen anything of this series, you'll know what a wrong approach to things that is. None of these guys did anything by themselves; they borrowed from other people's work. And how can you say when a golden age of anything started and stopped? The age of steam certainly wasn't started by James Watt; nor did the fellow whose engine he was trying to repair -- Newcomen, nor did his predecessor Savorey, nor did his predecessor Papert. And Papert was only doing what he was doing because they had trouble draining the mines. You see what I'm trying to say? This makes you think in straight lines. And if today doesn't happen in straight lines -- think of your own experience -- why should the past have? That's part of what this series has tried to show: that the past zig-zagged along -- just like the present does -- with nobody knowing what's coming next. Only we do it more complicatedly, and it's because our lives are that much more complex than theirs were that it's worth bothering about the past. Because if you don't know how you got somewhere, you don't know where you are. And we are at the end of a journey -- the journey from the past.