The two are mutually exclusive, knowledege of one precludes knowledge of the other. If both are known by one person, the universe would disappear and be replaced with one something even stranger. Some say this has already happened.
Some say it's also a ruse devised by a cunning editor of the Hitchhiker's Guide to the Galaxy in order to boost sales of the book, because it is the only publication in any galaxy with the words Don't Panic printed on the front cover.
hehe...