Capital letters

[Kevin]

I didn't pay much attention to the show, but I did come away with the concept that punctuation in particular, and grammar in general, are a constantly evolving aid to communication.

I've seen similar information before as well though I'm no linguist. The context I got the information in was doing some comparisons to spoken language. Spoken language is constantly evolving as well. New words get invented, other words fall out of use and words take on different meanings and/or connotations. Spoken language is not always an evolution to try and aid in communication either. Sometimes it's intentional obfuscation. A lot of slang is in this category. It's intended that other people don't always understand it, that the true information is not readily apparent. Of course some spoken language evolves to aid with communication as well. But it was mentioned that the general evolution of written language has been to clarify the meaning or try and convey the information that is typically carried in pitch, cadence, inflection, other vocal queues, and other body language.

I don't remember where I got the info or how reputable the source was, but it seems to make sense.