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Fixed #144, correcting typo.

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Amy J. Ko 2021-01-27 07:23:04 -08:00
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@ -4,7 +4,7 @@ The solution is effective communication. As [some events|https://www.nytimes.com
It turns out, however, that communication plays such a powerful role in software projects that it even shapes how projects unfold. Perhaps the most notable theory about the effect of communication is Conway's Law<conway68>. This theory argues that any designed system--software included--will reflect the communication structures involved in producing it. For example, think back to any course project where you divided the work into chunks and tried to combine them together into a final report at the end. The report and its structure probably mirrored the fact that several distinct people worked on each section of the report, rather than sounding like a single coherent voice. The same things happen in software: if the team writing error messages for a website isn't talking to the team presenting them, you're probably going to get a lot of error messages that aren't so clear, may not fit on screen, and may not be phrased using the terminology of the rest of the site. On the other hand, if those two teams meet regularly to design the error mesages together, communicating their shared knowledge, they might produce a seamless, coherent experience. Not only does software follow this law when a project is created, they also follow this law as projects evolve over time<zhou11>.
Because communication is so central, software engineers are constantly seeking information to further their work, going to their coworkers' desks, emailing them, chatting via messaging platforms, and even using social media<ko07>. Some of the information that developers are seeking is easier to find than others. For example, in the study I just cited, it was pretty trivial to find information about how wrote a line of code or whether a build was done, but when the information they needed resided in someone else's head (e.g., _why_ a particular line of code was written), it was slow or often impossible to retrieve it. Sometimes it's not even possible to find out who has the information. Researchers have investigated tools for trying to quantify expertise by automatically analyzing the code that developers have written, building platforms to help developers search for other developers who might know what they need to know<mockus02,begel10>.
Because communication is so central, software engineers are constantly seeking information to further their work, going to their coworkers' desks, emailing them, chatting via messaging platforms, and even using social media<ko07>. Some of the information that developers are seeking is easier to find than others. For example, in the study I just cited, it was pretty trivial to find information about who wrote a line of code or whether a build was done, but when the information they needed resided in someone else's head (e.g., _why_ a particular line of code was written), it was slow or often impossible to retrieve it. Sometimes it's not even possible to find out who has the information. Researchers have investigated tools for trying to quantify expertise by automatically analyzing the code that developers have written, building platforms to help developers search for other developers who might know what they need to know<mockus02,begel10>.
Communication is not always effective. In fact, there are many kinds of communication that are highly problematic in software engineering teams. For example, Perlow<perlow99> conducted an [ethnography|https://en.wikipedia.org/wiki/Ethnography] of one team and found a highly dysfunctional use of interruptions in which the most expert members of a team were constantly interrupted to "fight fires" (immediately address critical problems) in other parts of the organization, and then the organization rewarded them for their heroics. This not only made the most expert engineers less productive, but it also disincentivized the rest of the organization to find effective ways of _preventing_ the disasters from occurring in the first place. Not all interruptions are bad, and they can increase productivity, but they do increase stress<mark08>.