Because communication is everything. In the US, we produce mostly ideas and in order to convey the ideas into software, plans, or anything else we must be able to have concise understanding of what we're doing. Lack of strong communication skills will kill your chances of getting a job- as a technical recruiter, it's my job to rate your communication skills. If you're a software developer and you're having a sprint development session, how can you effectively do your part if you haven't actively listened? Or how can you tell someone what is needed from them if you aren't being clear in the delivery of your message? Or how do you motivate people if you're a leader? Through effective communication and inspiration. Everyone is impacted by not having effective communication skills.

Each distinct sphere of activity, no matter what its defining terms are, has its own appropriately tailored set of skills relevant for effective communicating within that particular sphere. For example, different standards of ettiquette are pertinent to different contexts of human interaction, and working knowledge of the standard vocabulary of one discipline is required for effective communication with others in the discipline, but is not transferable to other unrelated discplines. Most extremely and obviously of all is the "language barrier", while differences in the ingrained customs of different cultures entail similar impediments, if not mishaps.

Developing Communication Skills is very important to nursing practice because nursing care is based on communication with patients, colleagues and other health team members, although it’s also a challenge.

In October 2004, WHO launched the World Alliance for Patient Safety. The project wants to develop an international classification of patient safety.

Communication is essential to patient’s safety [(Goldstein, 2005), (Gray, 2004)], and many of the studies conclude that the communication problems are major causes of errors [(Gawande, M ., Studdert, & Brennan, 2003)] that occur during the transfer of moments [(Pesanka et al., 2009), (Ridley, 2004) (Lovasik 2009)].

According to the Joint Commission National Patient Safety Goals hospitals should implement standardized and systematic approach to communication in transfers of patients in order to minimize the possibility of occurrence of adverse reactions.  

This means that some mnemonics can be introduced to allow a systematic communication. Literature give us different examples, no one better than the other, but each one adapted to the team and the context. So, there is no mnemonic considered ideal to be implemented. The important thing is not which mnemonic use as long as the nursing team work together and analyze their own practice to develop a project that will improve communication and also audit the process and evaluate the success of the measures implemented.

Based on Joint Commission recommendations to implement a standardized and systematic approach to communication in my working context, we implemented a telephonic communication based on SBAR (Situation, Background, Assessment and Read-Back) and for intra and inter hospital transfers we are developing a written document based on ISOBAR (Identification of patient, Situation, Observation, Background, Assessment and Recommendation) that  will ensure that nursing handover became considered a communication standard that is applied in daily practice of care, ensuring systematization and organization of information transmitted verbally, that also ensure the continuity of care and patient's safety.

The question you pose is one which depends upon an understanding of what is referred to as metalinguistic awareness: Essentially, the ability to objectify and understand language sufficiently to facilitate its study as a science. For academic purposes, this necessarily involves some foundation in neurolinguistics, psycholinguistics, speech pathology, etc. Having said that, the immediate and obvious response to your inquiry is that, prima facie, virtually everyone, from my humble efforts here —to the highly formalized exegetical commentary one sees in doctoral dissertations—is affected by language competency. Indeed, all forms of interpersonal communication—regardless of context, lexicon, purpose, cultural relativism, etc.—depend upon an adequate, but highly complex linguistic skillset. Even the ability to make “small talk” or successfully employ idiomatic expressions are increasing being studied, particularly based upon numerous studies which address the impact of social media. FWI: There are also numerous, scholarly, longitudinal research data available online, which address both the primacy and overall significance of language in social organization, academic achievement and personal success in probably most areas of life. Perhaps if you were able to elaborate a bit, I might be able to provide an answer specific to your particular concern(s). My own interests, from an academic perspective, have generally centered upon language acquisition as a universal, human phenomenology—with a specific focus on its neurolinguistic componentry.