what was the hardest question you have ever had to answer about engineering? – Energy Zone

Question: what was the hardest question you have ever had to answer about engineering?

Asked by teevee to Becky, Carrie, Kelly, Robin, Usaid on 14 Mar 2012. This question was also asked by cheeze.
- Robin Stafford Allen answered on 14 Mar 2012:
  
  Some of the ones you guys are asking!

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