I've set up a blob which is about 100 cylinders and one big sphere.  The
cylinders are arranged kind of like cloves on an orange.

I've been calling a trace function to it and getting the wackiest of
results.
    #declare Downhere=
trace(collection,actorp[n]+<0,100,0>,-y,Normhere);
gives a different value for Downhere.y than:
    #declare Downhere= trace(collection,actorp[n]+<0,10,0>,-y,Normhere);

The +<0,100,0> trace value is 15 units below the one w/<0,10,0>.

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