Manufacturing vs. Shipyard Production Under 1.71.495696

I do not know if this was intended behaviour or not, but I thought it was strange so I wanted to bring it up.

I have a planet that is so polluted that I got the "A New Pathogen is Born" penalty which, supposedly, reduces manufacturing by 100% for 10 turns. I would think that reducing manufacturing by 100% would mean that manufacturing would be 0, but it shows as 63.65 (first screen snapshot on the left). Why?

While that is interesting, it is not the main reason for this post. The second screen snapshot (on the right) shows the military output for the shipyard assigned to the planet. It shows that the calculation for military output is based on the manufacturing of the planet WITHOUT the "A New Pathogen is Born" penalty (551.56 x 96% = 529.50). I would think that the military output should also be affected by the penalty.

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Most percentages in the game seem to be additive so you are just subtracting 100% from your total bonus. You are getting 738% from districts alone which easily offsets this.

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Quoting Ender9963,

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Most percentages in the game seem to be additive so you are just subtracting 100% from your total bonus. You are getting 738% from districts alone which easily offsets this.

I do not believe that is the case for 2 reasons:

the 100% penalty is outside of the tree under the 551.56 where all of the other percentage adjustments are, and
if the 100% penalty was additive, a quick mental calculation shows that the total would be over 700% and, with a base mineral input of 40.50, the total manufacturing would be well over 250.

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I think the stuff inside the tree is additive and the stuff outside of the tree are additive. I don't know how that +1 works in there. But 551.56 down to 63.65 is pretty close to dropping 88% which is -100%+12%. It isn't perfect but it looks like how it works from looking at stats in my game. That +1 core world is somehow impacting it in a way that doesn't make sense to me.

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I think you are right:

((551.56 + 1) + ((551.56 + 1) x (-1.00 + 0.12))) x 0.96 = 63.65

It is an ugly calculation, but the math works.

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