We said six months and it will be one year when the first phase of the project will
be over. That means 100% late. True it is a bit of an research project
and the number of features needed and implemented for a pleasant
release is double than the initial proposal. Still how could I be this
wrong?

Since I’ve been leadering at my old company I use to keep a time
registration. What I notice is that for 80% of the tasks I have to do
I’m bellow or there with the estimation. But with the remaining of 20%
I’m chaos. Actually there is all the extra time. Maybe one day I will
have enough information and I will manage to find all the correlations
about the type of tasks or maybe the sphere of the tasks which are
rebelling my management :).