title: Comparing two users
body: <p>I want to compare a user profile with another user profile based on education, experiences, skills, and country. If education is similar, the score will be 20, else it will be 0. And <code>total_score</code> will be the sum of the scores. I can then sort profiles similar to that of a given user based on the total score. Can anyone help me on how I can achieve this?</p>
  
  <p>I don't know how to compare two users or two things from the same table, and I don't know where to put my code in: the profile model, helper, or what.</p>