halves casting time 40%

if i have a wand and an artifact with an elementalist for example both wand and artifact got 20% halves casting time, do i get 40% to halve casting time? i don't belive it is so but i don't remember how to calculate, can someone plz post the calculation for it?

Think of it this way

when you go to cast a spell, it checks to see if you get the 20% bonus from your wand, yes or no, it then goes and checks your offhand. I believe the math works out to 32% chance of a normal speed up and a 4% chance of a dual speed up

It works for 4% of a dual speed up, that i'm sure of it since 20% of 20% = 4%. As for the chance of each HCT kicking in separately, they are both applied independently of each other. That means that first you have two separate 20% chance of HCT. However, i don't remember that actual % of those two independent 20%.

To determine how likely something is to *not* happen, multiply the inverses of the chances of it happening. Dumbed down, it means since you have 20% and 20%, the odds of one of those not triggering is 80% * 80%, or 64%. That means you have a 64% of the 1/2 casting time NOT working, and a 36% chance of it working.

It's not 40%, but it's close.

Everyone's close, but not quite. With dual 20 HCT weapon/focus, you get a 36% chance of getting HCT as randvek mentioned, and a 4% chance of getting 1/4 CT.

Not this argument again...

Dargon is right: 32% for HCT and 4% for quarter cast time.

you get 20% FC from your wand
that leaves you with 80% normal cast time
Your focus item gives you a (20%*80%)=16% chance on 1/2 cast time, and (20%*20%)=4% chance on 1/4 cast time
20% and 16% add up to 36%
This leaves you with 36% chance on 1/2 cast time, and 4% on 1/4 cast time.
How could it be 32%?

64% chance of getting no mod to trigger.
The opposite of this is getting at least one mod to trigger
100%-64%=36%
So, 36% of getting at least one mod to trigger.
4% of getting both to trigger.
36-4 = 32% of getting exactly one mod to trigger.

That's about it.

Actually every1 that has posted is wrong, those who know game code know that 20 20 offhand combos do not follow normal math proccesses, and simply stack to 40%. Also you get a 4% of both fast cast mods triggering - which will result in a double fast cast.




edit: double fast casting is pretty leet when u are using a 1/4 cast time skill or casting time stacks like healers boon+holy cast then infuse. If you dont know what it does maybe give it a shot - keep a close eye on your character animation =)

It is only 32% chance of 1/2 cast and a 4% chance for 1/4 cast, if u think its 36% chance of cast let me ask u this - What happesn when u have 5 seperatre half cast mods do u have 100% chance to half cast or less?

I already had this debate a few weeks back and upon much debate i concluded as weird as it seems they were indeed right at saying the above.

you can argue about how the math works out all you want, but its still 40% when u have two 20 20

math does not equal game code

How do you know game code?
If game code is different than math, why do we get these rare double fast cast?

um, no. If that were true, then we would expect to see Five runes on a character that reduces blind by 20% - total up to a 100% immunity to blindness. In relation to your theories on game code, this is pratically not the case. (The percentages are calculated each time, and do not stack directly.)

must I explain this again...
it is 32% chance to 1/2 casting time and a 4% chance to 1/4 casting time

and here is how it works:
80% X 80% = 64% chance of NEITHER triggering
20% X 20% = 4% chance of BOTH triggering
20% X 80% = 32% chance of ONE triggering
100%

to further explain, think of a Venn Diagram(two circles in which an equal portion from each circle overlap one another):

The overlapping portion represents the 4% chance to 1/4 the casting time.
So, since the overlapping section is 4% and it is an equal share of both circles, then that means only 16% is left in each circle. 16% X 2 = 32% to 1/2 casting time

thx all i didn't expect so many different answers but i think i have got the right one, thx

yea because weapon mods and upgrades for armor are the same thing ....

You have 20% chance for each mod, each mod is calculated in turn, even with 5 20% mods theres still a chance each all will fail because they all have there own seperate chance of suceeding and failing. eg. the 1st mod has 80% chance to fail, the 2nd mod has 80% chance to fail, the next mod has 80% chance to fail etc, etc.

With 5 mods theres still a 33% chance that none of them will trigger and a less than 1% chance that all trigger