I think its interesting how no matter the level of precision of instructions used, there will also be differing results from different individuals. Perhaps, this is due to the different perceptions and assumptions each human conceives individually. People by themselves, would interject their own ideals upon their instructions. However, when given a more specific and simplified set of instructions, the results have a higher chance of being close to what is the objective.

Regardless, it is difficult to put into words, what we have in our minds, and if we humans are unable to think of if properly, so would the machines.