This suddenly pops in my head.

As a raider, when a new raid released, let say everyone is new to the raid, do you guys go to wowhead and read the raid mechanics then execute the strategy as written or you guys dig out with your own strategy by try and wipe and try and wipe and try until you guys defeat the raid?

World first that clear the raid, can say they are superb genius because there is no guide for them but purely grind out the mechanics?