It seems I am interpreting the article much different than most people. I didn't read that killing dragons gives you more power or more words. Based on what some of you are saying, I don't want to be killing 60 dragons, let alone 20 dragons.
I read read that killing your first dragon, and absorbing its soul, makes you realize you have this ability. You then proceed to learn the words from various walls spread throughout the land, not from dragons. I didn't read that killing more dragons makes you more powerful with the words you learn.
I can see how that can be interpreted to mean that for each new dragon you kill, you gain the ability to learn another shout, but god I hope they don't really have 20 dragons to fight in the game, that seems overboard.
Yeah, good point. The article just says that killing a dragon "fuels [your] ability to learn a new shout". Of the options available, it seems like we can rule out the idea that killing a dragon makes more powerful the shouts you already have - killing dragons seems to have something to do with learning new shouts, not with increasing the power of shouts you already have.
I think you are right, I would think perhaps killing a dragon makes it possible to read a corresponding wall. The "runes" or whatever don't appear until you have killed the dragon(s) that goes along with that wall.
Yep, this is my bet as well. As you kill dragons, you increase in power as the Dragonborn, and that means you get better at reading the runes on the walls.
This still leaves a gap between learning the shouts - this is only a theory about how we learn the words which compose the shouts. Perhaps this is where the Greybeards come in? You get a bunch of words, but you need to be trained by the Greybeards to know how to combine them into shouts?