For close to 40 years, ever since I started reading physics, it has been my default philosophical position that the universe has no particular point or purpose the way our limited human mind understands either.
When I first came across the Nobel laureate physicist Steven Weinberg’s famous observation in his 1977 book ‘The First Three Minutes’ that “The more the universe seems comprehensible, the more it also seems pointless” I was inordinately thrilled. That is because it coincided with my own nascent view of the universe. That default position very much remains intact today but it comes under strain from time to time. One does wonder if that is all there is to it—pointlessly comprehensible.
The other day while going through some stunning photographs of Jupiter taken by NASA’s Juno spacecraft and discovering an earthworm with a bloated tumescent head and convulsing every few seconds in my front yard set me thinking about this theme all over again. While there are much smaller things than an earthworm and bigger things than Jupiter in our Milky Way galaxy, the two neatly framed the scale of things for the purposes of everyday conversation.
I was left practically paralyzed wondering yet again what the point or purpose is to Jupiter and the earthworm. They are just there like you and I are doing things that we can do before perishing at some stage of our existence. Where do Jupiter and the earthworm fit in the cosmic scheme of things? What impact do they have on the universe at large or there immediate surrounding? Precisely what is it that they do? The questions kept coming devoid of any cogent answers.
Since I mentioned Jupiter, let me also mention the Great Red Spot on it. It is an enormous Jovian storm whose size in the 1970s, when I first read Weinberg’s quote, was 23,000 kilometers across or big enough to accommodate a couple of Earths and all the earthworms. It has progressively become smaller since and currently it is said to be 16,500 kilometers, still big enough to swallow one Earth and then some. If our own immediate solar neighborhood is home to bodies that big and small, what point or purpose could there possibly be?
Just as I do not quite understand what the earthworm was doing with a swollen end and convulsing every few seconds, I do not understand Jupiter in terms of what they do. Weinberg has been naturally asked that question many times. Perhaps the most elaborate answer that I found from him was in an interview with PBS some years ago.
QUESTION: You have written that the more comprehensible the universe becomes the more pointless it seems. Could you explain what you mean by that?
Years ago I wrote a book about cosmology, and near the end I tried to summarize the view of the expanding universe and the laws of nature. And I made the remark - I guess I was foolish enough to make the remark - that the more the universe seems comprehensible the more it seems pointless. And that remark has been quoted more than anything else I've ever said. It's even in Bartlett's Quotations. I think it's been the truth in the past that it was widely hoped that by studying nature we will find the sign of a grand plan, in which human beings play a particularly distinguished starring role. And that has not happened. I think that more and more the picture of nature, the outside world, has been one of an impersonal world governed by mathematical laws that are not particularly concerned with human beings, in which human beings appear as a chance phenomenon, not the goal toward which the universe is directed. And for some this has no effect on their religion. Their religion never looked for any kind of point in nature. For others this is appalling, the idea that all of the stars and galaxies and atoms are going about their business, and it's just by accident that here on this solar system the peculiar chemical properties of DNA acting over billions of years have produced these people who have been able to talk and look around and enjoy life. For some people that picture is antithetical to the view of nature and the world that their religion had given them.
QUESTION: Do you believe then there is no overall point to the universe?
MR. WEINBERG: I believe that there is no point in the universe that can be discovered by the methods of science. I believe that what we have found so far, an impersonal universe in which it is not particularly directed toward human beings is what we are going to continue to find. And that when we find the ultimate laws of nature they will have a chilling, cold impersonal quality about them.
I don't think this means [however] there's no point to life. Usually the remark is quoted just as it stands. But if anyone read the next paragraph, they would see that I went on to say that if there is no point in the universe that we discover by the methods of science, there is a point that we can give the universe by the way we live, by loving each other, by discovering things about nature, by creating works of art. And that -- in a way, although we are not the stars in a cosmic drama, if the only drama we're starring in is one that we are making up as we go along, it is not entirely ignoble that faced with this unloving, impersonal universe we make a little island of warmth and love and science and art for ourselves. That's not an entirely despicable role for us to play.
That is a rather optimistic, positive view of us in the context of a seemingly pointless and purposeless universe. Of course, that does not satisfy my sudden angst about the universe. Perhaps the trick is to ride the cosmic raft and go where it takes or jettisons. Or as the Sanskrit saying goes “अनुगच्छतु प्रवाहम्” (Anugachchhatu Pravaham) or Go with the flow.
That still does not settle my question—“Yaar, yeh Jupiter karta kya hai?” (Pal, what does Jupiter do?)