The issue I have here is with the posters that act like people that have difficulties with completion of this mechanic should be ashamed of themselves, e.g., "You can't count on your fingers?", or are less than intelligent implying they should have learned this in school. I know myself when raiding in this game especially, that in the midst of constant aoes and mechanics, the last thing I need to break focus is something that makes me have to stop and do a computation. Many people are fine with it, many are not and I guess after reading all the negatives I just picked one that irked me and commented.
Thanks to the people that are actually putting forth the effort to make little graphs or explain it by example in their posts. That is how it should be approached and not by being negative or belittling.