I disagree with you pontifex. As I pointed out in an earlier thread, few people have an understanding of the scope of the Google index. Its not one program. Its impossible to be one. Its a group of programs controlled by a core. Just like an operating system. Its the only way they could serve billions of people. Think about this for a minute. In the US alone there are 300 mil people. If 1 out of 3 did a search tonight, that would be a hundred million searches. Several will do more than one. The scale of that software is beyond what people can grasp.
They need teams of people just to monitor the core and the index. The change control group must be very large. If there is a problem in the index(and I believe there is), its extremely difficult to troubleshoot live software.