This point is extremely intriguing. I think this is the most well-known issue while working in group. I have encountered this circumstance ordinarily because of absence of correspondence, postponement in answering and most essential when the colleagues depend on each other to complete things. While working in organization, it is unrealistic to depend on each other totally on the grounds that everybody allocated to do his/her own assignment and hope to complete in convenient way. WBS is made for a reason, for instance help clarifies extend more in subtle elements, doling out duties, and understanding the time, cost and hazard connect with the venture.