In many ways, in Rosencrantz and Guildenstern are Dead it is the title characters' fault that they die. They are easily, and, at times, willingly manipulated. Not to mention, Ros and Guil spend a good portion of the play messing around – swapping names, misunderstanding each other, playing at games of their own devising. Their foolishness is, in part, a source of comedy, but it also seems a natural way to stay entertained when one has as little to do.
In the play, the characters that appear the most foolish are those who take time to step back and attempt to understand their situation. By contrast, those who act thoughtlessly appear wise.