Saturday, February 19, 2005

Super-ways in digital and Mortal world

Can there be a relation between information highway and regular highways based on how the traffic moves ? Well there might be ... I will try to take 2 cases studies ... first one is the way traffic moves on both the highways in USA and second one is the way traffic moves on both the highways in India.

Before I get into details, I will be using 2 most common transport protocols used in Internet for comparison the Transmission Control Protocol (TCP) & User Datagram Protocol (UDP). I will give relevant explanation as and when needed.

US has vast & efficient network of road highways and traffic on most of the highways move smoothly, sometimes beyond the speed limit. They have very good problem recovery mechanism in DPS (dept of public safety) and EMS (emergency management services). Therefore I say its very much like TCP of Internet. Apart from have error control and recovery mechanism, its main function is move data from point A to point B (connection). Basically it says number of packets (data) sent per connection continue to rise till a packet gets dropped and then the number decrease rapidly and again continues to slowly build ... this cycle happens till all the data is sent.

Now lets take how traffic in a US highway moves .... cars are moving in order and a car starts going fast ... faster than speed limit ... now slowly everyone starts following this car, a long train of cars gets formed.... this continues till the guy in first car or last car chickens out and drops out of the train ....slowly one by one everyone breaks away .... everyone continue at their own pace for sometime and then the cycle starts again. sounds similar to TCP ?

Well half way across the globe is India, another big country with a vast & inefficient network of road highways, traffic on most highways is unregulated with little or no problem recovery yet traffic moves magically. hence I believe its very much like UDP of Internet. UDP is a low cost protocol which moves data from point A to point B with no error recovery or guarantee on anything including order of data and time to reach. bottom line, it says data will move from A to B but don't ask me how it will move and will it reach, just trust me on that.

For those of us who have driven in India we can already see the connection. For those of you who haven't, traffic in India is very much like UDP .... rules are not rules, they are just recommendations, there is no guarantee that u will reach safely and if something goes wrong there is no guarantee u will get help yet vast amount of traffic moves safely .some reach destination faster and some reach slower but most of them reach the destination.

Well I don't know if digital world follows mortal world or its other way round but there is a connection .... suddenly matrix sounds so interesting ... log on!

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