That's true as long as the people are not being bullied. In my case, I estimated something I barely worked on in an area of code I barely knew to take 2 weeks. When the boss left, the remaining 3 people kept telling me to estimate it to 5 days "because you know what boss thinks about 2 weeks". Then told me that 5 days is just an initial estimate and it can be later extended. I responded that likewise, 2 weeks can be scaled down and I'll be happy to be proven wrong. No response from them. I kept repeating the question.