I worked as Dispatcher (Load Control Clerk) for Servisair at MAN a long, long time ago before computer networks and centralised anything.
We had a simple system, before we loaded the aircraft we asked the captain after giving him his passenger / baggage weights and numbers how he would like to have his bags loaded. We used a pen and paper, no huge maths involved and it all worked out fine. Everything was done there and then and everyone knew what was happening.
I left aviation a long time ago and now work in Computer Networking and often see the over application of the technology in the name of efficiency.
No doubt this new system saves money for someone some where and makes the IT guys important.