So Dileep, you say that I want paper ballots so that I can rig them at booth level.

No, not you, and I don't consider you to be a
politician though you claim to be one.
Replacing the ballot boxes with ballot papers from 1500 booths would need 2-5 people per booth, i.e. 4500 criminals per constituency. Also, the ballot boxes for ballot paper are not shipped from CEC warehouse, but are manufactured locally at District/Tahsil level. Also, how would one know how many ballot papers to put in each box? No one knows voting % at each booth in advance. So replacing ballot boxes can be done only AFTER election, and not before. And this would require someone to run a huge printing press as well as ground staff to break into rooms. So this too would need 1000-2000 goons per constituency.
No. If you can replace the machines, you can replace the boxes AFTER the poll. Same number of people to me compromised.
The process of replacing ballot boxes AFTER the poll is too error prone, as the duplicate must have exact number of ballot paper as in the original box. Also, one would need to bring 3-5 trucks full of ballot papers, and must know in advance which ballot box is located in which room. Too many places to fail.
A ballot box is not too bigger than an EVM, so if you can replace an EVM, you can replace a ballot box.
Where as in EVMs, all 1500 Control Units of a given constituency go from one CEC warehouse to the Collector.
No. All machines for ALL the constituencies under a collector go to him, and they are randomized in the presence of the agents. Whenever you have more than one constituency (here in cochin there were three under the same collector) your logic fails.
So if a person has pre-fabricated rigged CUs, with support of Chawala, he can replace actual 1500 CUs with rigged ones within few hours.
Have you ever worked in a warehouse? I have. You need to find 1500 boxes by serial number, and replace them with the exact serial number. that is because the serial number of the machines are prepared well in advance and sent to the receivers. And since Mr. Chawla, or even the babu co-conspirator is not going to do it, you need a number of people to do that, and they are going to ask why you are replacing the boxes.
EVMs dispatching is centralized --- everything in from CEC warehouse and everything under CEC Chawala, who is well known for his corruption.
That is the cat out of the bag, isn't it? The devil-incarnate naveen chawla, like santa clause, is going to magically appear at the EC warehouses and replace the EVMS.
While in paper ballot, EVERYTHING is 100% decentralized -- printing is done at district level, boxes are made at Tahsil level, etc.
It doesn't matter. With paper, you can print your copies anywhere.
So to rig 200 seats :
1. in EVMs, I only need co-operation of Chawala, a few top IAS in EC and a few engineers to manufacture say 300,000 rigged Control Units abroad, and substitute them in warehouse before they are shipped.
Have you ever into a manufacturing operation that makes 300,000 units of ANYTHING? Let alone 300,000 sets of printed circuit boards? I have run PCB assembly plants myself, and I am right now sitting on top of one of the larger plants in India. Just to mention, have you any idea how many man hours is needed just to put the soldered boards into the metal boxes? Or to make the boxes themselves, and here you need to make them EXACTLY like the original.
And wonder of wonders!!! NO ONE TALKED!!
2. While to rig ballots in paper-ballot, I need 1000-2000 goons in each of these 200 Constituencies and I also need co-operation with 1000-2000 of grass root level policemen and officers.
No, you just replace the filled ballot boxes after the poll, just like you propose to replace the machines.
Does Naveen Chawla come personally to despatch the machines? Does the despatch done by a couple of men, deep in the night, so that no one, not even the chaiwala, notice the fraud? the whole of 200 constituencies are screwed, there are very powerful politicians who would give half their fortune to make a crack on it, and no one talked!!
Even dear leader Kim Jong IL would envy that kind of a feat! We live in a time where if you screw your secretary in the secrecy of a resort, the video of the action gets published on youtube. And no one talked!! Amazing feat indeed!!