Simulations (for scheduling) have for the longest time been the realm of computer nerds. Not any more.
There is now the ability (with some initial assistance) to let the workers on the ground modify and correct the black-box algorithms that the computer nerds created. All those erroneous premises and assumptions encased within the simulator will come to light and be corrected.
Realistic what-ifs can be tested.
Competing processes can be tested.
While in the middle of a process, project or case schedule— constraints can be changed, resources reapplied or their numbers changed— different outcomes can be seen.
Very specific ‘what might have been’ reviews are possible; change only the events or people you want.
This is great for getting people on the ground level to buy into improving their processes, or for management to understand the various departments’ processes for better integration.