David Parnas

Quotes

• Which one of these four quotes is attributed to David Parnas?

  • → The gem cannot be polished without friction, nor man perfected without trials.
  • → All happiness depends on a leisurely breakfast.
  • → The entrepreneur always searches for change, responds to it, and exploits it as an opportunity.
  • → As a rule, software systems do not work well until they have been used, and have failed repeatedly, in real applications.
  
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