What is Reddit's opinion of Patterns of the Universe: A Coloring Adventure in Math and Beauty?

From 3.5 billion Reddit comments

I am a nerd, so my favorite one is mathematics based. I'm not sure if the one I have is that exact one, but it's similar. There's just something pleasing to me about it. I use crayolas and they're fine. If the pattern doesn't have super narrow bits, I sometimes just use crayons because they feel easier. I also have a non-nerdy book that is gorgeous, but I'm so afraid to mess it up that I've never colored in it. Can't remember what it's called, but I'll try to post it here if I remember later on.

Coloring is one of those weird activities that occupies your brain enough to sort of shut off the constant background noise (like this on my anxious days), but not so much that it actually feels like effort. It's super relaxing. I hope you find something that you enjoy <3

Patterns of the Universe: A Coloring Adventure in Math and Beauty https://www.amazon.com/dp/1615193235/ref=cm_sw_r_cp_apa_i_2yYfCbD6S8TFW

The Colossal Book of Mathematics: Classic Puzzles, Paradoxes, and Problems https://www.amazon.com/dp/0393020231/ref=cm_sw_r_cp_apa_i_WAYfCbBWJ2G18

Or a letter of appreciation.

good idea. here's a cool coloring book: http://www.amazon.com/Patterns-Universe-Coloring-Adventure-Beauty/dp/1615193235