Shortly after this statement I found myself in a conversation prompted by the "What's and How's and Who's" that come when communication is missing. A project, a task or even simple teamwork is only as good as the communication that it is built on. Talking is not the same as communicating.
Examples of negative impact are easy to find, a project falls apart, a task fails to be completed, a team does not trust one another. Communication, however works both ways and sometimes its the lack of acknowledgement that can lead to as much destruction as anything else. Sadly, I've watched the lack of outward acknowledgement break apart teams that worked exceptionally well together and the things that should have been said while they were there only were spoken in their absence.
Communication is hard, but it is key to what we do and it will make or break the job at hand.