It is a wonderful world!

 I have a doctorate in engineering and so understand physics, science and engineering fairly well, at least on an intellectual level. However, that does not mean that I do not experience a sense of awe at what nature has revealed to us thus far.

 

Let’s start from the images of universe and its myriad of objects. A good place to start given how fresh are the images sent by James Webb Space Telescope (JWST). Although I know that there are 100 billion stars in our galaxies and there are 100 billion galaxies, plus or minus a few billion, I still feel overwhelmed when I see the images of deep space sent previously by Hubble, now refined by JWST. Now think about the fact that the visual stuff is just five percent of the universe. Some twenty percent is dark matter and the rest…seventy five percent---is dark energy. Now consider all that emerged from infinitesimally small singularity when the Big Bang occurred some 13.7 billion years ago. That’s not all. There are likely to be multiple universes around and there is also a possibility that the whole thing is nothing but mathematics, as per Max Tegmark of MIT.

 

From universe, let’s come down to the splendid complexity and variation of life on this earth. First of all, as Carl Sagan famously said, “we are made out of star stuff.” The heavier elements (besides Hydrogen and Helium) we are composed of would not have materialized if it were not the enormous temperature and pressure that are present in a star. As the star goes through its life cycle, it explodes dispersing this heavier stuff in the interstellar space and they eventually end up as our building blocks. How amazing is that?

 

For a physics and mathematics-oriented person, biology is a whole another world, so to speak. From a simple beginning of single cell life, how has nature created a complex human being? We are composed of some thirty trillion cells, each of them has a specific task to perform and requires regular nourishment. This count would double if we include microbiome…bacteria, viruses, and fungi…that live in/on us. 

 

Each cell is complicated and contain DNAs, RNAs and proteins. Recently, I started a course of biochemistry and molecular biology and finally grasped how complex the proteins are. There are thousands of them, each with its massive chemical and physical structure. DNAs themselves are a marvel of nature. They are complex molecules made out of three billion bases, which are “simple” chemicals. Something goes wrong with a few of them during reproduction and you have a mutation. However, it is the mutation that makes life as diverse as it is. New organisms emerge and those who are able to survive the situation then are able to thrive. The others don’t. 

 

Thinking about how a simple activity, like walking, requires an efficient execution of a complicated process. The retinas of eyes receive reflected light. That gets converted into electrical signals and get sent to a specific part of the brain which, through pattern matching, figures out what the eyes are looking at. It then sends appropriate signals to muscles that contract to make legs move while keeping balance. The “GPS” in brain notices where I am walking and gets me home. Unbelievable.

 

Even though the world that I perceive on my daily walks is complex, that is only a tiny sliver of what really exists, as described by Ed Yong in his book “An Immense World”. All of us, all living things, exist in our “sensory bubble” referred to as “Umwelt”, a German word. According to Ed, the earth teems with sights and textures, sounds and vibrations, smells and tastes, electric and magnetic field. A lot of it is outside our Umwelt. Just see the dog sniffing around. It is able to detect what is beyond what we can. Or a turtle that can track earth’s magnetic field. Or a bat that senses obstacles in total darkness using radar. Each in its own Umwelt.

 

However, even those animals can’t detect the part of our universe that is very small. Beyond molecules and atoms are quarks. The small entities (like electrons or photon) behave like particles as well as waves. Some properties of these very small particles are bizarre. They can be anywhere until observed. Also, a particle can affect another (it is entangled with) immediately even if it is at the other end of the universe.

 

I cannot but marvel at what nature has created. and remember Louis Armstrong and his famous song:

 

What a wonderful world

 

Old laws, modern impacts

Planet Money of NPR is one of my favorite Podcasts. Recently, it had two episodes, back-to-back, that made me think about old laws in different parts of the world and what impacts they have in modern days. 

 

The first story was about lunch time in France. If you have done any business in that country, you would know that lunch in France is not munching sandwiches at your desk. They like to go out to eat and devote more than one hour to this activity. What I did not realize is that there was, until recently, a law that required people not to eat in office.

 

The reason was, in the old days they needed to clean up work places after so many hours of being occupied…. fumigate and so on. So, people were forced to leave office buildings during midday. So, a natural outcome was they ate lunch outside their offices instead of just cooling their heels. Recently, the law was changed so workers can be more like us, Americans, and eat in their offices without risking arrest (I jest).  However, people still prefer to eat lunch out and it is now a French tradition. Why? Because they enjoy camaraderie and time away from work in the middle of the day.

 

Result: This old law continues to be beneficial even in the modern days, not in the way it was intended but because it promotes better work environment. 

 

Another story dealt with a law that is related to the expiry date stamped on food packages. We are all familiar with these dates…good if used by xxx, not to be to be sold after yyy, and so on. Not only are there multiple ways these dates are reported, but there is no consistency and different states have different rules.

 

A specific example cited was for milk sold in Montana. The law in that state says that a grocery stores need to stop selling milk by twelve days after the cow was milked, while in most other states it is about twice as long. The reason for the law is that in the old days milk did not last that long which is clearly not applicable any more given the modern ways of storing and treating it. All other states have changed but not Montana. Now it is difficult to make change in that state due to a powerful milk lobby. If they increase the days milk is allowed to stay on shelf, outsiders may come in. Currently they don’t because twelve days does not allow enough time to transport milk from long distance and sell it. 

 

Result: People in Montana pay higher price for their milk just because of an old law. Not so good, but not the end of the world.

 

It is hard not to bring up another old law which is causing a devastating impact, unlike the milk law in Montana. This one applies throughout US, and is not really a law but a constitutional amendment. You know what I am talking about. It is the second amendment which gives citizens the right to carry guns. This law was created in the days of militia and fear of a malevolent government. Just as is the case with the prior two examples, this reasoning does not apply in the modern times, but it is almost impossible to make changes. Once again there is a lobby involved, the NRA. Thanks to the vicious circle of gun manufacturers, NRA and greedy politicians, this amendment remains in force.

 

Result: Terrible. Massacre after massacre, with no end in sight.