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I still disagree. In real world cases tightly integrated designs have often been viable a decade or more before modularized designs came to market.

You seem to be implying (and please correct me if I'm wrong ;-) that loosely coupled systems are necessarily slower to market and/or perform significantly worse than tightly coupled solutions?

If so, I'm not entirely convinced. When I see tightly coupled software being produced it's normally a combination of one or more of:

  • Developers not having the necessary knowledge of ways to create software in a loosely coupled manner (e.g. not knowing about techniques like dependency injection.)
  • Not having appropriate tools to make the development of loosely coupled software simple (e.g. a language like Perl or Java offers more features that help with loose coupling than a language like C or COBOL.)
  • Not having experience of software development practices that encourage loosely coupled software (e.g. using TDD.)

Sure - there are some instances where a tightly coupled system has been deliberately chosen due to some constraint - but they seem rare in my experience. More often they're done first because that's the only way the developers know how to create software.

In reply to Re^6: Loose coupling (was Random quotes ...) by adrianh
in thread Random quotes in the top left corner by cog

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