[dila813]

Never use any model that can’t be backtested to at least reference data and the model’s use has to be controlled using only measurements that are available with the reference data.

This is basic stuff. You have to be a complete idiot not to know this.

[LaRueLaDue]

“Never use any model that can’t be backtested to at least reference data and the model’s use has to be controlled using only measurements that are available with the reference data.

This is basic stuff. You have to be a complete idiot not to know this.”

Bingo.

I worked with groundwater flow models and contaminant transport models back in another career, and it could take literally years to get a model working correctly...

[grey_whiskers]

Let me put it this way. When I finished my doctorate, I had to test the computer code against the published work of five or six other groups, whose results spanned a period of decades.

Only when I was able to reproduce their results, to three or four decimal places, was my code deemed bug-free.