title: Can a plain text file be corrupted or have a bug in the source?
body: <p>A rather simple question (I hope), but I am trying to learn more about plain text (in a UTF-8 mode) and how versatile it is. Most importantly, I'm reflecting on the usage of plain text in file systems such as <code>LaTeX</code> and similar processors.</p>
  
  <p>They say that plain text is the most stable. Plain text is stable (by design). No need to worry about metadata being corrupted by a program like Word or similar WYSIWYGs; But I'm wondering:</p>
  
  <ul>
  <li>Can a plain text file be corrupted (in its source) or otherwise contain "Bugs?"</li>
  <li>If not, can someone explain how this works? Is plain text just parsed <code>I/O</code>?</li>
  </ul>
  
  <p>This is an elementary question, I'm sure, but I'd like to understand how plain text functions inside a PC.</p>