I tried to retain the habit of posting something per day, as inspired by Ken Perlin. If I cannot find a good topic, I turn to his blog. E.g. in http://blog.kenperlin.com/?p=23712, Ken discussed “Could we create a hierarchy of fictional realities, through some reasonably objective criteria? If so, what would those criteria be?” It is actually a good idea. It reminds me of a paper of my friend – Mining Visualness. Now we have a title of a new paper: Mining Realities 
 A well-trained AI should be able to learn that by searching on Google Images.