If you take the pie out of the oven before it is done, it will be cold and it won't taste very good. If you keep the pie in the oven too long, it will be charred and will loose it's flavor.
When individuals are battling dizziness, they often times are dizzy for more than one reason. There are several "pieces" to their "dizzy pie." It is not uncommon for me to find four or five different reasons that a person is experiencing their different sensations of dizziness. Whether or not I am able to help them with physical therapy depends upon whether or not their pie is done cooking. In other words, if the causes of their dizziness have not finished running their course or have been present for too long, the likelihood of complete relief declines.