Pick one of your most intelligent, trustworthy, responsive associates. Time yourself at five minutes in describing some function of yours that the person has never done or seen. Keep it verbal. Explain freely in response to the person’s questions but take no more than five minutes.
Make it something of moderate complexity.
Then remain silent and uninvolved as the person carries out the function. Neither person speaks and there is no other kind of communication. Do not set a hard-and-fast time limit for this phase.
Take notes on what happens, especially at points where the person forgets or ignores your instructions, or adds/changes parts of the process.
At a suitable point, stop the experiment and discuss with the other person what happened, and why. Perhaps the instruction was at fault, leaving out elements that were so second-nature to you that you never thought to include them. Ones your partner had no way to know exist.