EVE New Citizens Q&A

So I have a ship.
With a thermal shield resistance above 50%. (I say thermal as an example)
I have thermal resistance amplifier that gives it roughly 30 ish %..
I also have thermal shield compensation level 4 to boost that resistance amount by 20% (because 5% buff per level).

I was under the impression that 50% plus 50% equals 100%..which equals 100% thermal resistance..which equals me taking zero damage from thermal based damage.
It said my resistance only went up to 94%....I am very confused.....I know how to add 2 double digit numbers because that is elementary school leveled math..so this was a 1st for me.

Is it just a bug they forgot to fix? Or am I missing something I don't know about?
Advise and clarification on this matter would be appreciated.

I was just ecstatic that I could have a 100% resistance on my ship so this comes as a shock to me.

The thermal resistance amplifer works on whatever damage is left over after other resists.

If your ship has 40% resists and your amplifier gives you 50% resists you will have 60% damage still incoming that the amplifier reduce by 50% leaving just 30% getting through.

Mathematically it is: Damage times Ship resist times Mod resist etc etc --- not added like in your example.

oh.
ok.

More on stacking penalties.

in case it's of interest to people:

The 'infinite' damage thing comes from the way the damage is represented. They're using an unsigned integer for it. They can store from 0 to MAXINT.

Signed Integers can store between negative MAXINT/2 to positive MAXINT/2

Due to how they're stored, (using what's known as 2's complement) if you try to store -1 in a unsigned integer, you actually get 1 below MAXINT.

https://en.wikipedia.org/wiki/Two's_complement

Others talked about the stacking penalties so here are the numbers for them.

1st mod: 100.0% effectiveness
2nd mod: 86.9% effectiveness
3rd mod: 57.1% effectiveness
4th mod: 28.3% effectiveness
5th mod: 10.6% effectiveness
6th mod: 3.0% effectiveness

A short how this works using your thermal as an example.
The first module will give you the full boost amount say 20%.
The 2nd one that affects thermal will only be 86.9% effective which means it gives you an additional 17.38% boost.
The 3rd one would be 57.1% effective so you get an additional 11.42% boost.
I think you can follow the pattern from here.

Another I did not see, although I may have missed it is that some rigs will not only stacking penalize with other rigs they may stacking penalize with your modules as well so be careful of this. If rigs stacking penalize with your modules the game starts the computations at the rigs so they get 100% and the modules will all be less following the chart above. If this occurs and given that modules oft times give better boosts than the rigs it may be wise to drop the rig and use it for something else.

I know many that like to do the math and even developed their own spread sheets for this, if you like that stay the course.
On the other hand if there are other things you want to do with the time then a good fit tool handles all of this for you.

Eve HQ
http://evehq.co/

PYFA
http://www.pyfa.net/

EFT
https://forums.eveonline.com/default.aspx?g=posts&t=24359

True, and yet it hardly maters, since everything in the game that may be stacking penalized is either a rig or a module.

I have never seen a stacking penalty from implants before and based on the link below there is none. Do you have other information or a link where this idea of implants being stacking penalized comes from if you do please share it because this is the first I have ever heard about it.
http://wiki.eveuniversity.org/Stacking_penalties

Yeah implants don't count, I messed that up by stating all the modifiers as such.

The other oddity with stacking penalties is Damage Controls and Reactive Armor Hardeners.

Damage Controls and Reactive Armor Hardeners have stacking penalties with each other but do not have stacking penalties with any other armor resists or hardeners.

Bastion I believe is the same.