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Learning from History Looking back into the history of products, you will notice that the design and development process and methodology has evolved over a period of time. This Article on History of UX design has a good set of examples on the approaches taken by different industry leaders. Some of them were focusing on the engineering aspects, while some ...


Syslog has 8 levels of logging. They are pretty good: DEBUG: Info useful to developers for debugging the app, not useful during operations INFORMATIONAL: Normal operational messages - may be harvested for reporting, measuring throughput, etc - no action required NOTICE: Events that are unusual but not error conditions - might be ...


Error: blocks user's progress; a condition that must be addressed. Warning: something doesn't look right, but the user can choose to continue. Notification: information that is helpful or valuable for the user, but everything is in order.

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