i am joined by you -- to the -- udacity cofounders sebastian. great to have you back on the show.me about this partnership with google. you are trying to teach developers how to write better code. how big of a problem is bad to code in android apps? sebastian: the mission is to announce a degree. what students can do is that they can become top-notch android developers. this is not an advanced degree but it empowers students to get to the skill level to find great jobs in silicon valley. emily: how does the way that android apps are written compare to the way that apple apps are written? is one code better? sebastian: android obviously has an enormous dominance in the world. what we find is the different size of the devices, watches television sets, tablets. we find that this requires a certain skill. for the first time, we have a degree that teaches people that skill. emily: you are the guy behind mood shots. they have pitched this new virtual reality device as a big item for the classroom. how excited are you about this? is this a big deal? sebastian: i have been asked what is t