https://streamable.com/6c89d
That was cool and here's the explanation.
(http://img0.joyreactor.com/pics/comment/domino-brick-mesmerizing-gif-2483426.jpeg)
c* [cool]
But how do you mortar then? ???
Yes, this could work with paver bricks where you could sweep in sand or maybe mortar mix. However, the space between the bricks will never be zero and most likely something like 1/4".
Someone had a lot of time on their hands... pretty cool though.