This paper discusses David Hume. David Hume believes that all ideas are derived and become knowable only from sense experience. From this standpoint, he rejects that we can know that every event has a cause, as he rejects the necessary connection between cause and effect, i.e., that the effect can proceed only from its cause. Just because something occurs after another on a regular and even observable basis does not mean that the former is the effect of the latter. To him, the effect may just happen without the connection to a cause. Not only is there more than one cause to an effect or more than one effect from a single cause, but also that certain causes to an effect - and the effects of certain causes - are still unknown in the world. The cause for cancer is one of these unknowns, although we are certain that there is a cause.
