Archive for April, 2009

The dichotomy paradox

Posted: April 28, 2009 in logic, paradox
Tags: ,

Its amazing to see how the logic fails to explain common things we see around leading to brain teasing paradoxes.

“That which is in locomotion must arrive at the half-way stage before it arrives at the goal”   – Aristotle.

Suppose Homer wants to catch a stationary bus. Before he can get there, he must get halfway there. Before he can get halfway there, he must get a quarter of the way there. Before traveling a fourth, he must travel one-eighth; before an eighth, one-sixteenth; and so on.This description requires one to complete an infinite number of tasks, which Zeno maintains is an impossibility.

This sequence also presents a second problem in that it contains no first distance to run, for any possible (finite) first distance could be divided in half, and hence would not be first after all. Hence, the trip cannot even begin. The paradoxical conclusion then would be that travel over any finite distance can neither be completed nor begun, and so all motion must be an illusion.

Hmmm…weird…so if u have read my previous post, then neither that tortoise can ever finish the race,altough he might be declared as the winner for always maintaining a lead.

PS: Contains adopted contents

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Achilles and the tortoise

Posted: April 28, 2009 in logic, paradox
Tags: ,

“In a race, the quickest runner can never overtake the slowest unless they start from the same point, since the pursuer must first reach the point whence the pursued started, so that the slower must always hold a lead”.

In the paradox of Achilles and the Tortoise, Achilles is in a footrace with the tortoise. Achilles allows the tortoise a head start of 100 feet. If we suppose that each racer starts running at some constant speed (one very fast and one very slow), then after some finite time, Achilles will have run 100 feet, bringing him to the tortoise’s starting point. During this time, the tortoise has run a much shorter distance, say, 10 feet. It will then take Achilles some further time to run that distance, by which time the tortoise will have advanced farther; and then more time still to reach this third point, while the tortoise moves ahead. Thus, whenever Achilles reaches somewhere the tortoise has been, he still has farther to go. Therefore, because there are an infinite number of points Achilles must reach where the tortoise has already been, he can never overtake the tortoise. Of course, simple experience tells us that Achilles will be able to overtake the tortoise, which is why this is a paradox.

PS: Adopted contents

Back from the ISRO test

Posted: April 26, 2009 in personal

That was one real good experience to write the ISRO test.It wasnt that bad as I expected.Despite of doing absolutely no preps I was able to answer a good part of it.More importantly I was able to asess myself,my strengths and weaknesses.OS and DB were my bastions,while I have refresh my COA lessons and some digital design.Networks was one stronghold,but there were only a few questions.THere was some crypto questions which I happily answered. OS was a piece of cake.But the worst case was maths which I am not in touch with for the last one year or so.PSQT questions were a nightmare.

Recruitment for ISRO

Posted: April 25, 2009 in personal
Tags: ,

Indian Space Research Organization is hiring.They are looking for 300 engineers and guess what the recession presented them, over a hundred thousand applications. Now they have short listed around 40-45 k applications and tomorrow we are gonna go for the battle. The first round-technical aptitude test.And for those who qualify,its an interview waiting them.So please wish me all the best.

Language of Hackers

Posted: April 24, 2009 in funny, hacking
Tags:

Well are u a hacker or someone who plans to become a hacker,then make sure u know their language,or else you’ll end up out of the pack.Dont worry make sure you know atleast the basics to survive.Here are some tips:

Language helps re-enforce the barrier between computer hackers and non-hackers, as well as that between hackers and crackers. Computer hackers have developed their own language. Firstly there is vocabulary that non-hackers will not know (TCP, IP, winsock, Linux, root access, vi, etc) due to a lack of computer-related knowledge. Secondly, some computer hackers have modified English with a set of conventions. Hackers replace ‘f’ with ‘ph’ (likely coming from phreaks who were interested in ‘ph’ones), and ‘s’ with ‘z’. Also hackers use numbers in place of letters such as ‘1’ for ‘i’ or ‘l’ (though replacing ‘i’ is not the proper usage), ‘3’ for ‘E,’ ‘4’ for ‘a’, and ‘7’ for ‘t.’ Also it is important to use random caPitAlizaTioN, abbreviation, slang, emphasize words by putting ‘k-‘ before them (“k-rad”), and finish a statement with a series of characters for emphasis.

So how do you ask for help..is it ” can someone help me with hacking my school’s computers?”….or is it “c4n sUm1 h31p m3 w1tH h4x0RiNg mY sk00lz c0mPz?!?!?!!?!?”…wow there u are…Now try to read this:

An Alienware PC was always my dream but I had to settle for a Dell XPS,afterall Alienware is now a Dell posession. Doesnt matter there is no one to preceed the Aliens when it comes to style and performance,though it can burn a hole in your pocket. But now the two giants Google and Alienware (Dell) joins hands to make THE PHONE.Well see that for once and then we will talk about the rest.

Alienware makes the body and Google makes the soul.Yes its a Google Android powered phone.I cant take my eyes off this one.God gimme a few hundred bucks and I am gonna have one of its kind.I love that Alien glow. Put short the highlights of it are(adopted contents):

  • Classic Alienware eye catching design
  • Large screen with high resolution
  • Superb video gaming capability
  • Fantastic Audio
  • Built on the Google Android platform
So is it a plane,is it a superman or is it an Alien.
PS: Mr.Superman is also an alien from Krypton…lol.

HP to bundle Android!!!

Posted: April 23, 2009 in Corporate, google
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Beware Mr.Gates and his replacement,HP confirms its gonna sell a range of its Internet notebooks with Google Android instead of Vista or W7.That move is expected to let HP sell notebooks at a lower costs and has a better access to google services. Well nowadays Internet has become a synonym for Google services.

But the analysts from around the globe is asking one question.Is Android ready to leep in yet.The mobile version of it is just finished but still to take down a goliath like MS, David need to have more target practice with the catapult.Need to address a lot of issues including availability of softwares and more importantly the drivers. And a user friendly interface that can eclispse that of windows is also a must. Afterall we dont want Google to make those same mistakes as Linux. But the good part is that,its from the Mighty Google and not from some weekend programmer. If they can rule the whole internet in less than a decade,man anything is possible for the wizards there.

Since its based on open source linux kernel all the open source freaks should also be happy.Android lets people contribute.Android was designed for mobile phones but has been seen by some others besides HP as a potential OS for netbooks. Some enthusiasts have been testing Android on netbooks such as Asustek’s Eee PC, and chip makers such as Qualcomm and Freescale hope to bring Android to netbooks running on their Arm-based chips.Now that PC’s and mobiles  are in a way to meet each other Android becomes more relevant.

And I would suggest you guys to read this particular article

Three Reasons Why Android-Powered Netbooks Could Kill Microsoft Windows.

Well the three reasons are simple:

* Money

* Exposure

* Simplicity

Whatever that is, there is one thing I always have to admit “Google Rocks”.