The discontinuity involved in the collapse of the wave function
is a total hack
. And there are a whole lot of magic numbers
, the speed of light
If there's no possibility of an undo, I'd at least like to see a pause button.
Re-enable cold-fusion. Rather than fixing the bug, they should have just documented it and made it a feature.
The class hierarchy should be re-designed. As it stands, it is often impossible to tell exactly which class a given object is in.