I 100% agree with your comment however in regards to it's relationship to the parent comment I have to disagree somewhat in the usual nitpicky hackernews fashio

I 100% agree with your comment however in regards to it's relationship to the parent comment I have to disagree somewhat in the usual nitpicky hackernews fashion: Asking someone to draw "a bicycle" is different to asking them to draw a specific bicycle or a functional bicycle. Also what does it mean to "know something"? If you ask someone to draw a house and they draw a square with an overhanging equilateral triangle centred on top, it's not that they don't know what a house is. That's just a symbol representation of their own personal definition of a house.