title: Why should I use a thread vs. using a process?
body: <p>Separating different parts of a program into different processes seems (to me) to make a more elegant program than just threading everything. In what scenario would it make sense to make things run on a thread vs. separating the program into different processes? When should I use a thread?</p>
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  <h3>Edit</h3>
  <p>Anything on how (or if) they act differently with single-core and multi-core would also be helpful.</p>