With external pressure to get something done and a full description of what needs to be done, lazy people will find a solution with the least possible amount of effort. That's why they often make good developers.

Problems arise when there is no immediate external pressure, or when the task isn't well-defined. In that case, lazy people will put it off until it becomes immediate (at which point the effort required may be much higher), or they will do the bare minimum to satisfy the requirements of the task according to the definition. If the definition of the task wasn't complete, the task won't be done completely.