5/5 I hope conversations such as this will empower our industry to minimize unwanted unintended consequences in the long-run. An objective that I'm glad #thoughtworks shares with its #socialchange and #responsibletech efforts (.

@KentBeck 7/7 As we know, event storming, journey mapping, etc help us determine 1st-order and 2nd-order boundaries that ‘functionally relate’ for the given business. This translates to code-level boundaries as well.

@KentBeck 6/7 This analysis of boundary separation starts with business needs, rather than assessing change axes only. Change axes (eg shipment arrival coupling) are sometimes technical assumptions that can actually change when given a chance - forced by business needs.

@KentBeck 5/7 For example, these can all be cohesive (functional) boundaries depending on the business. - by gender and age, if generic - not by gender/age if women’s boutique - by color, if specialized suit store - by item, if event-based family-matching outfits - by price, in a clearance

@KentBeck 4/7 Another real-world example I’ve used is designing a clothing store. Here too, the 1st order boundaries depend on the business model.

@KentBeck 3/7 So you would find different sections for different countries/continents. Each region in the store could be subdivided by food categories and/or by technical temp gradient requirements (refrigerate, cool, room-temp, etc).

@KentBeck 2/7 Building on the grocery store example from @beniamin80, if the business purpose is to provide international cuisine options, the primary boundary could be by geographical region instead.

@mark_buckingham Likewise! There’s much we can do for pragmatic software architecture.

I'm giving a keynote at XConf 'morrow at 9am ET with @scottdavis99: "Re-Decentralizing the Web and recapturing our data". It's an event by @thoughtworks to share experiences with emerging tech. Come only for our talk or stay. #privacyfirst #responsibletech

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