title: Why are sorted dictionaries and lists slower to add, delete, and get values than unsorted?
body: <p>I made some tests with: SortedDictionary, SortedList, and Dictionary (just to compare). The results were that Dictionary was much faster than those two others in adding, deleting and returning values based on key (100,000 pairs key+value in each dictionary). </p>
  
  <p>Can someone tell me why SortedList and SortedDictionary are slower than Dictionary?</p>