&gt; realize that Tichy pulled the wool over our eyes.<p>ref: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Revision_Control_System" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Revision_Control_System</a>, <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Walter_F._Tichy" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Walter_F._Tichy</a>