Not only that, but it includes functionality: it's clickable, to load the next two lines of text. Such a remarkable amount of work has been lavished on that comma. It probably explains why there were no resources left over to put commas between the listed items "designers architects musicians filmmakers writers engineers".
Whatever I, or anyone else, think of the site, it's grabbed attention and provoked reaction/discussion, because Ive.
I think you're referring to Optimistic Rollups which is now live on Ethereum. It can help BAT in lowering the transaction fees and makes the it faster. Optimistic Rollups is one of the scheduled solutions leading up to Ethereum 2.0 with sharding.
From the wiki:
Dunbar's number is a suggested cognitive limit to the number of people with whom one can maintain stable social relationships. By using the average human brain size and extrapolating from the results of primates, he proposed that humans can comfortably maintain only 150 stable relationships.
In a big company such as Google with very complex systems, such a thing is likely to happen. Even with very detailed specification with rigid scrutiny, details like this will fall through the cracks. Often we anticipate every possible edge cases but haven't taken into account outside systems that plays a big role too, which leads to cases such as this.
