<p>
</p>
<p>Note that in civil engineering, the stuff being designed:</p>
<p>a. Is extremely expensive and valuable compared to the capacity of engineer or his/her company to replace it.</p>
<p>b. Has only one chance to get it right, because it is not really feasable to give the customer a replacement if the first one is defective in a serious way.</p>
<p>c. Is often used by people who were not directly involved in the process of purchasing it.</p>