the numbers square up with this estimation of human consciousness bandwidth: 

arXiv.org
The Unbearable Slowness of Being: Why do we live at 10 bits/s?
This article is about the neural conundrum behind the slowness of human behavior. The information throughput of a human being is about 10 bits/s. I...
most people speak about 150
words per minute, and read 200 wpm.
most type about 50 wpm and listen around 150 wpm.
text-to-speech, and speech-to-text is the optimal interface that gets us closest to thinking velocity.
yet our thinking is mostly limited and constrained by our language.
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