Lauren Ipsum: A Story about Computer Science and Other Improbable Things by Carlos Bueno
My rating: 5 of 5 stars

I thoroughly enjoyed this book. Learnt some valuable computer science concepts too since this was taught to a child, it was very easy to grasp. The concepts share are foundational and it is presented in a neat, easy to understand manner. I internalized the importance of "naming", the thing with jargons and principle of 5-whys. Very helpful book.

Brief Introduction to Rational Emotive Behaviour Therapy. by W Froggatt gives an overview of the Rational Emotive Behavior Therapy, a Cognitive Behavior Therapy school of though in psychology.

The topic itself is accessible and is easy to read. The paper has suggestion on number of books that cover this topic for further reading and study.

The Linux Command Line by William E. Shotts Jr.
My rating: 4 of 5 stars

For most purposes, I think this could be considered a reference book. Giving quick tips about the Linux/GNU utility and tools. Even as an experienced user, I managed to find useful tips in this book about Bash Shell, quoting and testing conditionals in Bash. I appreciated the general notes about the "Linux culture" sprinkled throughout the text.

This book might be a quick, due to glancing and turning of pages, and worthy read beginner and experienced programmers alike.

Neuromancer by William Gibson
My rating: 2 of 5 stars

I couldn't understand this book. It was a hard book to read. I liked the language used by the bartender like addressing Case as "Artiste" and like the picturesque description of the settings in the book. But I couldn't understand the plot, I couldn't understand or follow the motivation of the characters. I took help from the Internet to follow what's the story about, but still I seemed to have missed much of the story in this book. Given the number of awards this book has won, the experience was little unexpected one for me.

2BR02B by Kurt Vonnegut Jr.
My rating: 5 of 5 stars

This book can be read in the time you'd read the wikipedia page about this book. This was the first Kurt Vonnegut book for me, and it was a sampler for what to expect if I read more from the author. It's a concise presentation of dystopian future when humanity has decided on population control in a weird way. I was thinking that there is logical loop hole in the book, I can't say that as it would be a spoiler, however, I think, author intended the reader to focus on the bigger picture than question some of the assumptions.

The book might help you to appreciate the mess in this world!

The Manga Guide to Electricity by Kazuhiro Fujitaki
My rating: 5 of 5 stars

This is a very high quality book that explains the concept of electricity to the reader. My personal story is I had started ignoring the electricity terms as something confusing, to be taken for granted and "someone-else" will know better. So the labels in the electronic appliances, my houses energy consumption, electric appliance voltages like 120 V and 240 V etc, were household terms, but no intuitive meaning for them. This book changed that for me. I can understand what those terms mean now. I look at the batteries and have sense of how this is working. I am looking forward to my Solar setup to understand the energy usage. I appreciate how the Integrated Circuits work with the underlying concept of diodes, flow of electricity, concepts of physics and chemistry involved in what makes or creates electricity in the first place. This book opened up a universe for me.

The Stars, Like Dust by Isaac Asimov
My rating: 4 of 5 stars

This book belongs to the genre of Space-opera. Plenty of drama, plot twists, hero, heroine and plot twist. I think, I read it twice, and I enjoyed the book when I read it the second time.

Superhuman by Habit: A Guide to Becoming the Best Possible Version of Yourself, One Tiny Habit at a Time by Tynan
My rating: 4 of 5 stars

The value of this book will be measured by how much I could utilize the tips giving in this book to improve my self-discipline. I will never give a 5-rating for a self-improvement book. The 4 rating is for excellent language and conversational style of this book. The book is well written, it is based on good research, solid principles and explained it's propositions well. Towards the end, it had some "selling" of stuff that author personally liked. But that's it, nothing negative about it.

Indian Astronomy - A Primer by Dr. S. Balachandra Rao
My rating: 5 of 5 stars

I read this book after I had completed reading the book The Greatest Inventions of the Past 2,000 Years. In that, I noted down the contributions of The Indo-Arabic Number System as one of the significant inventions in the past 2000 years.

The important thing to note was, the positional value number system along with 0 was invented a 1000 years before the birth of Christ and it was systematized by Aryabhatta in the year 499 CE.

This greatly increased my curiosity for Indian mathematics. The book was a boon in that regard. It dwells with the Indian Astronomy, mathematics with a verifiable accuracy. We are given a survey of Astronomy in , Vedanga Jyotisa , Siddhantha (established truth), and giving the information about Aryabhatta I, Bhaskaracharya. It goes into details about Zodiacs and constellations (as calculated by the astronomers), Yuga System and Eras.

I came to know that Kali Yuga commenced on 17/18 February 3102 BCE, at the demise of Krishna.
So, as of this writing of the review, we have been living in **5119 years** since the start of Kali Yuga (an epoch).

The book also introduced me to the concept of Luni-solar months, were lunar months are pegged upon to solar months. The metric value is called Ahargana,. In Sanskrit 'ahoratra' means one full day and 'gana' means count. Hence, the Ahargana on any given day stands for the number of lunar days that have elapsed starting from an epoch.

This is the counting system used in Indian calendars. After giving details about this, book then talks about Co-ordinate systems, Rasi and Naksatra systems, Panchanga (Panchaga means 5 parts which are Tithi, Naksatra, Vara, Yoga and Karana) and gives the reference for the calculation mean positions of Sun, Moon and Planets.

Given the words like "Panchanga", "Tithi" etc, one would expect this book to be written by some astrologer or might have some preachiness to it. This is where, I think, the book shines. No, it has none of the preachiness, it has none of the emotional or venerable expressions towards those concepts. Instead, those are presented as Indian mathematics, by done mathematicians in India when as they pursued their understanding of the universe and recorded them.

The book is written by Dr. S. Balachandra Rao is was a professor of Mathematics, who has published around 20 books in subjects ranging from Numerical methods, differential equations, calculus, Indian Astronomy, and mathematics.

Here are two articles about inventions that were listed Book Review: The Greatest Inventions of the Past 2000 Years book that I wanted to note down in my blog for future reference.

The reason I wanted to note down is, I personally find that numeric system that we use today has stood the test of time and is limitless. And my second reason could be due to a emotional attachment and association that is imbibed in me.

V. S. Ramachandran

My favorite invention is the place-value notation system combined with the the user of a symbol 0 for zero to denote a nonexistant number; this marks the birth of modern mathematics. This system was invented in India, probably during the first millennium before Christ, but was first systematized by the Hindu mathematician and astronomer Aryabhata I at the tail end of the fifth century and then transmitted to the West via the Arabs (hence the phrase "Arabic Numerals"). Before this time, even simple arithmetic was tedious and time-consuming (as when the Romans and Greeks used the cumbersome "Roman numerals" - sometime still used in the west). And math, of course, is essential for all science. Without the early invention of zero and place value as well as the use of the a symbol to denote an unknown quantity in an equation (algebra), also from India, subsequent developments could not have occurred. There would be no calculus, no newtonian or Galilean science, no computers, and essentially no modern world.

Keith Devlin

"What is the most important invention in the past two thousand years?" is one of those questions that no correct answer - like "What is the best novel / symphony / movie?" - But if I had to make a choice, it would be the Hindu-Arabic number system, which reached essentially it's present form in the sixth century. Without it, Galileo would have been unable to begin the quantificational study of nature which we now call science, and we would not have had calculus, another major invention of the period in question.

Before of it's linguistic structure, the Hindu-Arabic number system allows humans who have an innate linguistic fluency but only a very primitive number sense to use their ability with language to handle numbers of virtually any useful magnitude, with as much precision as required. Today there is scarcely any aspect of life that does not depend on our ability to handle numbers efficiently and accurately. True, we now use computers to do much of our number crunching, but without the Hindu-Arabic number system we would not have any computers.

In addition to it's use in arithmetic and science, the Hindu-Arabic number system is the only genuinely universal language on earth - apart, perhaps, from the Windows Operating System, which has achieved the near universal adoption of a conceptually and technologically poor product by the sheer force of market dominance. By contrast, the Hindu-Arabic number system gained worldwide acceptance because it is far better designed and much more efficient for human usage than any other number system.