The questions - are asked by ordinary people - like you or me. Some questions are quite specific on a particular subject - others are 'random' that could be answered with a visit to Wikipedia. Remember - you're not compelled to answer every question! Just answer those which you know something about. If you use your common sense, you'd figure they probably don't know anything about it. You said it yourself... it's difficult.
On another note: Some questions really are completely unanswerable.
On a lighter note: I'll ask the hard questions around here!
Questions arise. No one knows everything. So we need to get answers.
If you are referring to why it is hard to find questions with the right answers on wiki.answers it is because anyone, and everyone, has the ability to answer questions on this site. Sometimes kids come on to this site and write bogus answers because they think they are funny. The people who do answer the questions here try really hard to answer them correctly and with detail, and try to correct the wrong answers.
There are many answers about Alexander on this site, and you can ask for answers of other questions as well. Similarly there are answers about the Hanging Gardens in the Mesopotamia site.
because no one answered them.
An hypothesis starts out as a what if. So does guessing.
The purpose of a survey is to get answers. So at least ONE must be a required answer!
The purpose of this site is to provide answers to people who ask questions. Most of us like to provide answers for people, so that they have the right information, and so that they can rely on sites like this one when they have questions.
because answers are inanimate they are ideas and they cannot speak nor process stuff or your questions are so stupid that no one looks them up
probly because theres like a milion questions so its kind of hard for one to stand out so fast
So there will be answers.
there are gazillions of phone numbers so it'll be hard to disipher which phone number you want. as for me, NO WAY JOSE
The reason is because we don't have a system that answers questions. How the answers get there is by people. By asking and answering questions. So since people give the answers it might be days or weeks or more till you get an answer because we have 2,000,000 members and 10,000,000 questions so there are a lot of questions to go through and answer them all but eventually your questions will have answers.