Mr. Sainul speaks up story here
Today I saw for the second time story coming up in Digg about this Indian student who developed and demonstrated a technology to store 450 GB of data on a sheet of paper. This story was first reported by Arab News and later other media outlets started quoting them.
This shows how technically illiterate the news reporters are.. The idea of storing something in paper is good, but trusting someone blindly when they say they are showing a movie from a piece of paper is absolutely naive.
For people who still believes such stories, please try to find answers for these fundamental questions.
- How did he make his paper disk?, though the reporter missed to ask this question directly, it seems he used some sort of printer (laser or inkjet). So if we take the best printer available and try to print a digital photo with such a high resolution so that its size is 450 GB, will you be able to print that with out loosing its resolution?
- Even if a printer is able print at that high resolution, the paper is made of fibre which has uneven surface, think about your CD or DVD being rough like paper, will the drives read it. When you want to store such a huge amount of data, even micron level of difference do matter a lot.
- Some people where suggesting by using different colours one can squeeze in more data, but what about error tolerance then? This guy is questioning the fundamental reason why digital / binary technology became popular, its because its either 0 or 1 , so its mostly fool proof, we could have used different voltages and instead of binary, use 0 1 2 3 4, but then it will not be fool proof.
- This guy is claiming he used circles and triangles to store data, so but even for triangle he has to use 3 co-ordinates , that itself utilized 3 bits, so how is he saving space?
- Barcode companies did their maximum when they tried to develop 2 D barcodes and the maximum they could get was around 2000 bytes of data!!
- These types of scams happen regularly in India, a guy claimed he got alien cells from rain, someone developed gasolene from leaves in started selling it in large quantities
Some people have requested me about how many bits is 450 GB, well lets see what Google says...
3 865 470 566 400 bits!!
So he printed these many dots in an A4 paper? even if printed just 1 in 100th of 3 865 470 566 400 ie 38 654 705 664 bits (ie compressing 100 bits to the space of one bit by using different colors and triangles and circles) with a 15 megapixel camera he will be able to detect only
21 037 500 000 bits!!
A4 paper = 8.5 X 11 inch
Using a 15 megapixel camera he can detect 8.5 x 15000 pixels on the breadth side and 11 x 15000 pixels on the length side so total will be 21 037 500 000
update 2: some people have noticed that the arab news article says 256 GB in a paper, and I was saying 450 GB, actually 450 GB came in the register.co.uk story that broke in digg day before yesterday
update 3: I am an Indian and there are many Indians who are brilliant and hardworking, the graduates from IIT are the best in the world!
update 4: I am going to patent this idea, instead of geometrical shapes, we are going to imprint the whole 26 letters and numbers 0-9 on paper, so I m saying it can hold 500 Terrabyte of data on a stamp size paper :) how is that?
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