In his Recode interview, Elon Musk postulates that humans suffer from a fundamental input/output limitation that (supposedly) places an upper bound on our cognitive capabilities. He uses the example of a human typing on an an iPhone to illustrate how our max rate of information output is very low. He then explains how our rate of information input is much higher, mainly because we have a high-bandwidth visual interface.

Are there ways to increase the max rate at which humans can output information, with or without the use of currently available science and technology?

Very interested in hearing your thoughts.