Skip to main content

COMPUTERS CAN KEEP PEOPLE HONEST AND TRUTHFUL

   

     The block chain technology can help us to trust strangers.  The highlights of 'Block chain' is given below.

1. It is the blocks-digital information stored in the data base-chain.
2. Thousands of computers in a network verify a block of info.   Say a transaction.  Hence it is 100% authenticated.
3. Anybody can view the info. in the block chain.  But no-body can edit it.
4. Each block has a unique id called 'Hash'.

The process:  Transaction takes place.verified. given unique id. added to chain. cannot be hacked.

     Now we will see some applications of block chain.
1. Copyright:
     By using block chain, musicians and content creators could access real-time and transparent royalty distribution data and would have better understanding of where and how their content is being accessed.  In this 'internet' era, content downloads can be easily monitored and the artist will get their own fair share of royalties.
2. Share 'power' with neighbors.
     Suppose, you generate electric.power using solar panels. You can sell or share it with neighbors using block chain.  Everything will be accounted for.  Companies like microgrid in Brooklyn, powerledger in Australia already uses block chain.
3. Digital Voting:
    With block chain, voters will be able to vote digitally.  This coupled with block chain's immutable nature makes for a secure voting system.  So once a vote is given, it cannot be changed or tampered with.
4. Weapons tracking:
    Using block chain, a transparent and unchangeable registry can be created. It will  allow the government agencies to track weapon ownership.  So Gun control will be a reality.
5. Medical Records:
     One can publish medical records securely on a block chain and allow only authorized  people to access these records from anywhere in the world.  Now best medical care will be possible.
6. Tracking prescription drugs:
    Block chain technology can allow drug makers to track their products by using serial numbers and trace them back to the place of manufacturing.  This ensures that customers are getting authentic drugs, when they pick up at pharmacies.
7. Origin of your meat:
    With block chain technology, you can now discover the origin of your lamb meat and track it from farm to the table.
8. Pay-per-use
     Video content providers charge subscription fees which allows users access to all the content on their platform.  But customers are not interested in all the contents  the 'app' provides and they may want to watch one TV show.  Block chain allows to pay only for the content the users have consumed.
9. Money transfers:
    Funds can be transferred from one party to another with out the mediator, "the bank".  Transaction will be validated 24*7 and settled with in a matter of seconds.
10. Real estate transfers:
    Block chain eliminates paper work.  Block chain can store  transaction or titles, when you buy or sell a land, a house or a car.  It is transparent and gives clear picture of legal ownership

    Last, one wish:
    Suppose, we feed the serial number of 2000 rupee note to the computer and track its travel from bank note press to our wallet, all transactions of the 'Note' will be laid bare and people will fear to receive money under the table. Corruption will be wiped out.
    Use block chain and fear nobody.  Honesty is still the best policy with block chain.
--------------------------------------------------------------------------------------------------

Comments

Popular posts from this blog

LISSAJOUS FIGURES

  Definition:  "When a particle is subjected to two sine wave motion or two oscillatory motion at right angles, the particle describes lissajous figures".      We know sine wave motion and circular motion is basically same.  Hence we draw two circles A and B perpendicular to each other.  The circle B rotates twice faster than circle A.  That is, frequency of circle B is two times than that of A.        A particle at the intersection of two circles is subjected to two sine wave motion   A and B at 90 degree simultaneously.  The particle will describe figures depending on the frequency and phase of A and B .  In our case, the ratio of frequency is  1:2 and the two waves are in phase.        To draw lissajous figures :  A moving point in both the circles are chosen.   Here we should remember; during the time taken by the circle A to complete one rotation, circle B completes two.  Hence the points are marked on the circles according to their speed.  Then straight lines

THE PARABOLA

          A jet of water shooting from a hose pipe will follow a parabolic path.  What is the so special about parabola.    Y= x^2 Draw a graph for the above equation.  It will result in a parabola.  This parabola is also called unit parabola.  Any equation involving square will yield a parabola. Example:  Y = 2x^2 +3x+3 (also called quadratic equation)    X= 2 and -2, both  satisfies the equation 4 = X^2.  Parabolic equations always have two solutions.     Any motion taking place freely under gravity follows parabolic path. Examples:   An object dropped from a moving train,   A bomb dropped from flying plane,  A ball kicked upwards.      If a beam of light rays fall on the parabolic shaped mirror, they will be reflected and brought to focus on a point.  This fact is made use of in Dish Antenna, Telescope mirrors, etc.      Inverted parabola shape is used in the construction of buildings and bridges.  Because the shape is able to bear more weight.      A plane

CASINO'S GAME

           Let us find out how the casino survives with mathematics.      Say, your friend invite you for a game of dice.  You must bet (wager) 2 dollars.  If you roll 'six' you will get back 8 dollars.  The game will go on for 30 rounds.  All sounds good.      The probability of rolling 'six' is 1/6.  Since the game will be played for 30 times, the 'expected win' is 30*1/6 = 5.  That is, you are expected to win 5 rounds out of 30.  Hence your gain will be 5 * 8 =40 dollars.  ok.  This also implies that you will loose 25 rounds.  Hence your loss will be 25*2 =50 dollars.  Your net gain will be gain-less = 40-50 = -10 dollars. For 30 rounds, the loss is -10 dollars, Hence, for one round =-10/30 = -1/3 dollars.  There will be a loss of -1/3 or 0.33 dollars per round.  It is not a fair game.     Let us make a simple formula to calculate  'Pay out per round\. The probability for a win = p The pay-out in case of win = V No. of rounds = n The expect