To an end user, how is this a different experience from flash? You browse to a website and must execute binary blobs in order to view the site. Even worse, it'

To an end user, how is this a different experience from flash? You browse to a website and must execute binary blobs in order to view the site. Even worse, it's like Flash but where the flash 'plugin' has been written from scratch by each web browser, giving us endless possibilities of incompatibilities which are a nightmare to fix.