Vital Parameters in Construction Project Scheduling...?

Logical Sequencing
Irrespective of all other Parameters available , I put higher emphasis on to LOGICAL SEQUENCING of ACTIVITIES in preparing a Construction Project Schedule.
There are various other parameters like..:
1. List of Activities : Any skilled person should be able to list down. Too many or less numbers of activities?
2. Duration of Activities: Methods available but more theoretical only..
But all of the above parameters are meaningless if the Logical Sequencing is WRONG..!!