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logistics
why is object-oreinted analysis and design needed?
goals
From, Ultimately, The Sun.
Light is needed in Photosyntesis
To stay alive or liviing
Reproduction.
to design a structure
The Xerox Corporation never went into bankruptcy in the first place, so no strategies were needed to come out of it.
There is no alternative. C++ supports unions, so no alternative is needed.
R134a is the current alternative to R12. I have found Freeze12 put out by AutoRefrigerants.com. They say no retro-fitting is needed.
How should I know?