Well, in the most extreme form, you'd wind-up with something like the poisson distribution [1], where your chance of finishing each week would be the same. Thi

Well, in the most extreme form, you'd wind-up with something like the poisson distribution [1], where your chance of finishing each week would be the same. This is not entirely implausible but it produces effects even more paradoxical/pathological than log-normal. Here, you could give a correct estimate of the expected time for a project to complete as 50 weeks. You could then reach week fifty and again give a correct estimate of 50 more weeks required. And then you could finish the next week. [1] https://en.wikipedia.org/wiki/Poisson_distribution https://en.wikipedia.org/wiki/Poisson_distribution