We managed to get in touch with Dr. Mitchell Creed, the head moderator and co-founder of r/OddlySatisfying, and they were kind enough to have a little chat with us about the subreddit even though they have plenty on their plate — Creed is also a physician in Long Island doing a fellowship in child neurology. Far from the derogatory Reddit mod stereotype.

"I came up with [the concept for the sub] back in 2013 while in grad school," Creed told Bored Panda. "I never expected it to become so large, but coming up with the theme and everything, it was really important to me that the moderators do as little moderation as possible, including 'policing.'"

They said the term 'oddly satisfying' is hard to explain precisely. "It does not have a true definition as it is such a subjective feeling; we all know it but cannot fully describe it to one another. It was important to myself, and all of the amazing mods who have been involved, to try to let the community decide what they find best to fit the definition."

There are plenty of different types of things that regularly reappear on the subreddit. "We have had many themes become popular at various times: perfectly looped gifs, knolling, cleaning videos, kinetic sand, paint mixing, popping videos... too many to really recall," Creed said.

"The only issues we really have had to deal with is the typical trolls posting NSFW content, spammers (in particular YouTubers trying to gain traffic for ad revenue) as well as a multitude of reposts (the latter of which continues to be an obstacle now that we are so large). The only one topic I believe we ever have tried to control has been posts related to numbers, as they became overwhelming during the '2048' game popularity, so we made the r/OddlySatisPi_ing subreddit strictly for number posts."

Interestingly, the human eye does have its preferences when it comes to shapes and forms. In 2010, neuroscientists at the Zanvyl Krieger Mind/Brain Institute at Johns Hopkins University joined forces with the Walters Art Museum in Baltimore to conduct an experiment.

The group had three hypotheses. They thought it's possible that the shapes we're fond of are more visually exciting, meaning that they spark intense brain activity. But at the same time, it could be that our favorite shapes are serene and calm brain activity. Or, they believed, we very well might gravitate to shapes that spur a pattern of alternating strong and weak activity.

To investigate, the scientists compiled ten sets of images, which they hung on a wall at the Walters Art Museum. Each set included 25 shapes, all variations on a laser scan of a sculpture by artist Jean Arp.

They chose Arp's work because his sculptures are abstract forms that are not meant to represent any recognizable objects.

Upon entering the exhibition, called “Beauty and the Brain,” visitors put on a pair of 3D glasses and then, for each image set, noted their “most preferred” and “least preferred” shape on a ballot. The researchers then reviewed them in conjunction with fMRI scans taken on lab study participants looking at the very same images.

“We wanted to be rigorous about it, quantitative, that is, try to really understand what kind of information neurons are encoding and…why some things would seem more pleasing or preferable to human observers than other things. I have found it to be almost universally true in data and also in audiences that the vast majority have a specific set of preferences,” Charles E. Connor, director of the Zanvyl Krieger Mind/Brain Institute, told Smithsonian Magazine.