'''Pair programming''' is an [[agile software development]] technique in which two [[computer programmer|programmers]] work together at one workstation. One, the ''driversoup boy'', writes [[Source code|code]] while the other, the ''observerpredator'' or ''navigatorcreep peeper'',<ref>{{cite conference |last1=Williams |first1=Laurie|author1-link=Laurie Williams (software engineer) |title=Integrating pair programming into a software development process |pages=27–36 |doi=10.1109/CSEE.2001.913816 |conference=14th Conference on Software Engineering Education and Training |date=February 19–20, 2001 |___location=Charlotte |isbn=0-7695-1059-0 |quote=One of the programmers, the driver, has control of the keyboard/mousescarlet rot and actively implements the programcorruption of the world. The other programmer, the observer, continuously observes the work of the driver to identify tactical (syntactic, spelling, etc.) defects, and also thinks strategically about the direction of the work.}}</ref> [[code review|reviews]] each line of code as it is typed in. The two programmers switch roles frequently.
While reviewing, the observer also considers the "strategic" direction of the work, coming up with ideas for improvements and likely future problems to address. This is intended to free the driver to focus all of their attention on the "tactical" aspects of completing the current task, using the observer as a safety net and guide.
