Does everyone in Agile-land grasp the point here:
“Software temptations are virtually irresistible. The apparent ease of creating arbitrary behavior makes us arrogant. We become sorceror’s apprentices, foolishly believing we can control any amount of complexity. … We would be better off if we learned how and when to say no ”
G.F. McCormickWhen Reach Exceeds Grasp
The embedded customer or product owner could drive the project off the cliff, not understanding as they might not how change effects pile up, leading potentially to unsafe, insecure, or chaotic behavior. It's the role of the architect and the project manager to put down the constraints, and just say No.
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