Their engineers have to split their time and attention between two or more projects which can result in lower quality. The longer the project goes on, the more disconnected the team can become, momentum slips, and decisions made early on can start to be questioned.
Changes in direction often delay the project even longer and more meetings are likely to occur. For a typical small project with just five resources, a two-month delay can easily incur 50 hours of additional time.
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