What makes a pattern a pattern, Computer Graphics

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QUESTION

(a) Suppose that you have been assigned to re-engineer the existing systems for a company. Do you think that design patterns can be applied to these existing systems? Justify your answer.

(b) What are three reasons that cause requirements to change?

(d) What makes a Pattern a Pattern?

(e) What does Alexander means by the following statement "But it is impossible to form anything which has the character of nature by adding preformed parts.

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