[omoikane]

Seems like there isn't much material to expand upon "()()" versus "())(".

I prefer this other article about palindromes:

Was It A Cat I Saw? - https://news.ycombinator.com/item?id=33285198

[cleansingfire]

I had to work harder than expected to get this. I interpret the cartoon as distinguishing between meaning and form. Until I read it aloud, I couldn't stop interpreting the strings as

open close open close

in both directions.

[hettygreen]

Thanks for explaining this.. I honestly had no idea, even tried to google it.