A felony preliminary hearing is normally just a routine procedural event. The prosecutor merely needs to show enough evidence that a crime probably occurred and the defendant probably did it. This is not sufficient for a prosecutor to win at trial; merely to show that the prosecutor has a legitimate reason for brining a criminal charge against a specific person. It is basically a constitutional protection trying to prevent prosecutors from prosecuting individuals due to illegitimate reasons such as race, religion and politics.
Tyler's result was not normal. Tyler's client was pulled over driving a stolen car and was accused of unauthorized use of a vehicle. Tyler proved that his client borrowed the car from the car thief. Therefore, Tyler's client had permission to drive it - from the person who stole it! Case against our client dismissed!