Because the answers are all from people and if people are involved there is also a level of error which must be taken with it.The answers on wiki answers improve with time! Questions that have only been here a short while will have worse answers than those that have been here for a long time and have been revised many times.
Not a single person - there are many thousands of people contributing to the site.
You can't answer when you or other people will die, or when the world will end, although many guesses for all of these have been made, they're not really answers.
There can be a number of answers for a proof. Mostly people try to stick with the more basic answers.
Many people use this for answers a lot. WikiAnswers is the 13th most popular site on the web, so many people use it for answers. You are also using WikiAnswers for answers because you don't know the answer to your queston, too.
To get so many answers!
many people
Very few do that. With thousands of people using it, the answers load is distributed among many people.
Many people read these questions and answers. The people have spoken.
The number of answers changes every minute as answers are deleted and are answered.
lol answers sucks
answers corporation and many other people.