Hmmm, you should really be checking before you post. I know the urge you may have to get the answer in before other people, but it doesnt take long to read and check what you have wrote.
If there was an edit option it would be missused. I could ask a question like"do you like beans?"
people could write , yes, no , yes, etc.
But, if i go into edit it, i could change it to "are you gay?" or do you eat snot?" or Do you smell?"(i could go on all day, but had better not) which the answers will still relate to the Q...