Were you able to write anything? no Did the marker make a relevant noise? no Were you going to write something for yourself to read? no For someone else? yes If for someone else, was that person present? no WAG: were you going to write down something you just said as a reminder, but the marker made such a horrible squeaking noise that noone would forget it? no (interesting) Was it a reminder to buy more markers? no Did you end up just placing the defunct marker there instead of the writing? Yes! Why?