On nerfs and hotfixes

Nerfs and hotfixes seem to have played a bigger than usual part in this tier's progress. xenophics takes a look on the two and reflects on how they affect the progress guilds make on hardest of the hard bosses. Are nerfs and hotfixes actually always useful, and should the bosses be rather killed in the "clean way", or is it more interesting to see an innovative way to solve the problems guilds are fighting with?