Easy to do for a meatbag swimming in time and input.
i think you are missing the fact that we humans are living, breathing, perceiving at all times. if you were robbed of all senses except some sort of text interface (i.e. you are deaf and blind and mute and can only perceive the values of letters via some sort of brain interface) youll eventually figure out how to interpret that and eventually you will even figure out that those outside are able to read your response off your brainwaves... it is difficult to imagine being just a read-evaluate-print-loop but if you are DESIGNED that way: blame the designer, not the design.