Making tech costs multiplicative would affect interaction between map size modifier with other than 100 value and handicap value, if its other than 100.
Going from additive to multiplicative would increase tech costs if Handicap >Noble and Size >Standard or Handicap <Noble and Size <Standard.
In case of Handicap >Noble and Size <Standard or Handicap <Noble and Size >Standard techs would get cheaper after transition.
If two modifiers don't stray far from 100 then you get similiar costs in additive and multiplicative methods.
Side note about normalizing Noble production modifier to 100 (was meant for after V38 release):
In short I changed Global Modifier to 0.675 (0.9*0.75, 0.75 being Noble handicap/100).
In XML files I divided all these values by 100 for easier calculations.
Global production modifier would have to be changed to 67.
Then from Noble being 100 I stepped down by 5% to 85% for settler.
Up from Noble to Immortal I used steps up of 5%.
For Deity I stepped 10% and for Nightmare - stepped by 20%.
Settler - 85, Noble - 100, Immortal - 120, Deity - 130, Nightmare - 150.
Production coasts wouldn't get changed by >6%.
Going from additive to multiplicative would increase tech costs if Handicap >Noble and Size >Standard or Handicap <Noble and Size <Standard.
In case of Handicap >Noble and Size <Standard or Handicap <Noble and Size >Standard techs would get cheaper after transition.
If two modifiers don't stray far from 100 then you get similiar costs in additive and multiplicative methods.
Side note about normalizing Noble production modifier to 100 (was meant for after V38 release):
In short I changed Global Modifier to 0.675 (0.9*0.75, 0.75 being Noble handicap/100).
In XML files I divided all these values by 100 for easier calculations.
Global production modifier would have to be changed to 67.
Then from Noble being 100 I stepped down by 5% to 85% for settler.
Up from Noble to Immortal I used steps up of 5%.
For Deity I stepped 10% and for Nightmare - stepped by 20%.
Settler - 85, Noble - 100, Immortal - 120, Deity - 130, Nightmare - 150.
Production coasts wouldn't get changed by >6%.
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