Session planning

It dawned on me lately - no matter how well prepared I might think I am, I seem to rely mainly on experience for the questions and answers section  of every lesson. Some students may ask questions we haven't had before, and we may have to find out the answer, but we encourage those that think outside the box. Keep asking questions. Keep wondering. Allow us to try to help you develop your interest in bikes. 
Having the answer to everything you're asked is impossible, knowing that is knowledge in itself. 
As a person that loves learning, having the difficult questions is another opportunity to learn more, in order to pass that information on.