Because the projects are delayed, for example, the savings that are accruing are smaller than planned. That means that we have to reprioritize across the projects and operations.
The projects are more complex. The systems are more complex, as well, in terms of what was discovered when this set of infrastructure was passed over. The interdependencies across the networks, the data centres, and the security aspects are much greater than was anticipated.
The ability of vendors to deliver what we're looking for on the schedule that we're looking for is proving more difficult than expected.
There are quite a few elements of this exercise, this project, that are quite difficult.