[KalMann]

I think this is disingenuous comparison. When we read a book we can estimate the amount of data we're taking in based on the character count (each character being represented by some fixed amount of bits).

What you're suggesting on the other hand is something akin to counting the number of pixels on each page we look at. That's absurd overestimate of the amount of data a person reading is actually taking in.

[necovek]

I believe there is a point: we simulataneously ingest words, but also glyph shapes and learn acceptable variations between them (eg. serif vs non-serif, large x-height vs small, curlier or more elegant, playful letters...) — all of these contribute to our multi-faceted learning, but ultimately, we do seem to need less of the data to learn (how long it takes for us to learn to recognize letters vs OCR based on ML).