Determining the complexity of a software development project

So, if, ideally, a programmer would spend 4 hours on the implementation of a certain task, then, using a focus factor of 0.55, we get the actual duration of work on the task of almost 7.5 hours. The difference is significant and must be taken into account.

I note that the focus factor of 0.7 is achieved in ideal teams consisting of very experienced specialists who have a very high-quality development process and work for a long time within the subject area known to them. The value of 0.6 is achieved with pair programming in average teams, but this development mode is very exhausting for developers, so it will not work to constantly keep the bar high. Therefore, the value I have taken of 0.55 is generally more in line with the needs of advance planning.

It is convenient to express the duration and dependencies of tasks using the Gantt chart [4]. This will give an idea of ​​which tasks can or should be performed in parallel (and, accordingly, they need different performers), and which ones should be performed sequentially.