Making a mistake in choosing your advisor can mean years of frustration。An advisor who has made his mark views the accomplishments of his students with pride, even joy. They are his research 'children.' Thus, other things being equal, an established professor is a superior choice for an advisor.A young advisor, trying to make his way in the world, does not want to be shown up by his student or postdoc. He has a lot to prove, and is unlikely to be generous with credit for ideas or progress.For the typical employer, a postdoc is cheap labor. Acquiring a postdoc is therefore much like buying a piece of laboratory equipment. One assumes that it will work for a while, helping to produce results. Then it will be replaced with a new model。但要挑到好的导师,谈何容易!