Risks of partnership

[The Raven]

When you are about to have your own startup company, you can do it alone or with a partner. Now, the risky part of finding somebody to work with is the trust in the first place but also the idea in witch the company should go to. If your ideas diverse even a little, that's a huge problem if company kicks off. Now, how about shares? If it is 50/50, how to deal with upcoming misunderstandings on business plan?