Dr Rajiv Desai
An Educational Blog
NET NEUTRALITY
NET NEUTRALITY: _ _ I am reminded of Abraham Lincoln’s remark: “The world has never had a good definition of the word liberty. We all declare for liberty, but in using the same word we do not mean the same thing.” Substitute ‘net neutrality’ for ‘liberty’, and that’s where we are today. The Internet has unleashed innovation, enabled growth, and inspired freedom more rapidly and extensively than any other technological advance in human history. Its independence is its power. Net neutrality means internet service providers (ISPs) should treat all data on internet equally. The ISPs have structural capacity to determine the way in which information is transmitted over the internet and the speed at which it is delivered. And the present internet network operators, principally large telephone and cable companies—have an economic incentive to extend their control over the physical infrastructure of the internet to leverage their control of internet […]
VACCINE
_____ VACCINE: The figure above shows a victim of smallpox. ______ Prologue: “You let a doctor take a dainty, helpless baby, and put that stuff from a cow, which has been scratched and had dirt rubbed into her wound, into that child. Even, the Jennerians now admit that infant vaccination spreads disease among children. More mites die from vaccination than from the disease they are supposed to be inoculated against.” –George Bernard Shaw, 1929. The world has come a long way since George Bernard Shaw fulminated against vaccination in the 1920s. Small pox was declared eradicated from world in 1980 largely due to small pox vaccine. In 2008, Barack Obama called science on vaccines ‘inconclusive’. But in 2015, the same Barack Obama called science on vaccines “indisputable”. Vaccination was voted by readers of the British Medical Journal in 2007 as one of the four most important developments in medicine of […]
REFRACTIVE ERROR
________________ REFRACTIVE ERROR: ________ Prologue: Way back in 1973 when I was 12 years old and studying in 7th standard, I noticed that I could not read black-board from last bench. Initially I thought that everybody must be finding difficult to read black-board from last bench but it was not the case. Soon I visited eye doctor who found that I have refractive error and he prescribed -4 (minus 4) eyeglasses for me. Since then I have been wearing glasses. Refractive errors are usually present in the childhood and continue in the adult life. Unfortunately, they are not given much importance in our society which is evident from the fact that there is no effective system of pre-school visual examination of children either in the government sector or in the private sector. The earth was formed 4 billion years ago. Society has been around for about twenty thousand years. Spectacles […]
SMARTPHONE
SMARTPHONE: _______ The figure above shows transition of telephone from landline phone to smartphone. _______ Prologue: Alexander Graham Bell’s invention has come a long way since its prototype in 1876. The latest model of telephone requires no external wiring, fits in your pocket, takes dictation, and answers any question in seconds. For most of us, our compulsion to look at that little screen is so powerful that we can’t go for any more than a few minutes without checking it. Smartphones have gained so much significance in our lives that choosing one is a little like choosing a religion. Our preference for either an iPhone or an Android model seems to suggest something fundamental about who we are. Smartphone is a combination phone having computer, web browser, camera, GPS etc and therefore, if you lose your smartphone, you lose everything. There are three screens of the ‘Digital Lifestyle’ in the […]
Closed-Circuit Television (CCTV)
Closed-Circuit Television (CCTV): ________ CCTV pictures showing Al Qaeda’s terrorists Mohamed Atta and Abdulaziz Alomari boarding a 6:00 a.m. flight from Portland to Boston’s Logan International Airport on September 11, 2001. _____ CCTV footages of 2015: _______ Prologue: In the past people didn’t misbehave because they thought God was watching them. Today we’ve replaced an all-seeing God with the glassy eye of the CCTV camera. A CCTV camera can operate 24 hours a day, seven days a week, and 365 days a year without a toilet break or lunch. It does not need a holiday, maternity leave and rarely goes sick. There were 25 million CCTV cameras in operation worldwide, with 2.5 million in the UK in 2002 but today the figure is doubled. Practically every major city now boasts a CCTV system aimed at, among other things, preventing, detecting and reducing crime. Increasingly these developments are mirrored in villages, […]
