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...Goal define and understand the characteristics of rules for writing good requirements value providing rationale preliminary verification technique with each requirement introduction engineering is a technical process it certainly not like novel or book this even kind seen in instruction manuals user guides document two aspects have to be carefully balanced need make readable set processable are smart specific must address only one aspect system design performance expressed terms what how well solution measurable objectively quantitatively e g an exact pointing degrees can tested thus verified prior launch achievable technically at costs considered affordable jwst early designs specified aperture eventually descoped due issues deployment...