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Booleans Are a Trap

Don't use booleans for domain modeling or at least think twice before doing it.

They map perfectly into how computers work at a low level and play nicely with if statements, our primary control-flow tool. The partner was never paying, yet the system allows such combination on booleans and we needed to handle it, otherwise risking nasty exceptions. While booleans are perfect for their intended purpose – representing true/false technical states – they often fall short when applied to a domain.

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