The progression from spoken to written English has over time created ‘contextual marks’. Spacesbetweenwords, CAPITALIZATION, commas, & “quotes” are all examples from only the last few centuries. We have been breaking up the natural flow of spoken English - into meaningful parts on a screen.
Language depends heavily on contextual understanding - from cultures to groups, passing conversations and even inside the humble sentence. This, That, He, Hers are all basic examples of sentence-level contextual markers. These words are mere arrows, by themselves meaningless, that point to an understood person, place or thing.
On this modern keyboard the keys dedicated completely to producing context almost take up more room than QWERTYUIOP/ASDFGHJKL/ZXCVBNM. Context is its own language and through the keyboard we see the distinction we’ve given it in the structure of our keys. Out of the 78 keys available to hit, a full 58 are purely contextual or technical.