title: How do you explain to a sales person that programming is really difficult and takes time
body: <p>I often work with sales and marketing types that cannot figure out how to use Excel, let alone understand the scope of their requests from a technical perspective.  Of course, it would not be fair to expect them to, but that still leaves me with a problem.  </p>
  
  <p>What is the best way to show marketing and sales types that they have asked for something that requires a lot of complex programming and some patience?  </p>
  
  <p>Could you please share examples of problems and solutions?  </p>
  
  <p>Could you please recommend books on this subject?</p>
  
  <p>Thanks!</p>