The development of the panelbox was necessary, because time after time there were to many non-modal dialogs which showed important information.
If it was not modal then we could show the splash screen in a non-modal form and let the sort process continue without interruption.
It has also been claimed that modal truths supervene on non-modal ones, and that general truths supervene on non-modal ones, and that general truths supervene on particular truths.
It has also been claimed that modal truths supervene on non-modal ones, and that general truths supervene on particular truths.