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From the comments:

> Of course, design patterns have no place in a simple data-driven pipeline or in your numerical recipes-inspired PDE solver. But the same people that write this sort of simple code are also not the ones that write the next Facebook or Google.

> post author: Google is kinda more about PageRank than "design patterns".

wut

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What's the problem?

Google's initial success can be attributed to the effectiveness of the PageRank algorithm, not the quality of the code that implemented it. It doesn't matter if the first implementation (or even the current implementation) was a horrible mess of gotos in a single ten-thousand-line-long function, from the point-of-view of its users.

Obviously if code works it doesn't matter what it looks like to users, but the whole point of code design is making code easier for programmers to work with and maintain so that it stays working for users. Writing and maintaining Google scale software without design principles would be a nightmare.

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