Listen, I need you to make "scientific" tests, not just asume what the result would be. I need you to take a trade route in the game you have, open it in SP and tell me how the :nav tech affects the revenues. That's the only way I can give you sensable replies. That's why your assumptions are bombastic, you havn't tested anything. I was the one who wrote into that rules file you have peaked in that the tech reduces trade with 50%. I may even have been mistaken there (even though I think not). Do you understand what I mean? You need to make concrete tests from many different trade routes, and then base your conclusion on that.