there's a level of absurdity here to it. let's look at some of the categories offered. 1970s sentimental set in europe dramas, romantic chinese crime movies, 1980s mind bending cult horror. how are they able to hone in so specifically on taste? >> there was an interesting investigation done into this done with alexis maddry gal with the atlantic recently. their team dug into the coding and the categories they come up with and it turns out they have more than 76,000 tiny little genres that they have developed by tagging individual movies and tv shows and categorizing them. and the point of this is that they're able to look at which tiny genres you have liked in the past or watched in the past and suggest those. and this sort of goes back to the fact that the licensing agreementses are expiring and being renewed and started every