Double Buffer

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In a project planning meeting recently, I heard a coworker say "Double Buffer". I figured that he meant a performance technique for animation or networking:

https://www.codeproject.com/java/javadoublebuffer.asp

or like:

https://www.usenix.org/publications/library/proceedings/osdi99/full_papers/pai/pai_html/node20.html

But he actually meant doubling the time estimate for each task in our project. I couldn't stop myself from immediately suggesting that he read the book 'Critical Chain':

https://www.amazon.com/exec/obidos/tg/detail/-/0884271536/104-9443640-3586327

Or for a quicker overview:

https://www.processimpact.com/articles/rainyday.pdf