Yeah, its nice that it has an easy explanation. Its taken over the internet like the dress did, but this is much less creepy and has a simple explanation.The dress one has to do with visual cues which are so ingrained into our brains that it's impossible to change them. This one however is more about your brain actively trying to sort info out so it's much simpler to get people to experience both versions of this effect.
Basically it's this but without the video to push your brain in one direction or the other:
I'm surprised this hasn't gone viral yet:
