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Now we begin to appreciate the strange flavor of *L _{1}*.
We appreciate the idea that solutions are ``intervals''.
But it is distressing to realize that we
could often have graphical difficulty displaying the results.
In practice we might need to settle for ``seeing some examples.''
Perhaps a satisfactory way of generating those examples
would be by using random starting values for the fitting.

Suppose we set up the Busch problem with *L _{1}*.
Perhaps we will find the solution is not a unique surface.
It might turn out to be a ``mat'' of variable thickness.
It would be annoying to try to display the thickness,
but perhaps the thickness is related to the uncertainty of the result.
That should have value.

4/27/2000