I don't think that's true, the filament evaporates (sublimes?, sublimates?) from the heat and eventually it is too thin to support itself and breaks. That's how

I don't think that's true, the filament evaporates (sublimes?, sublimates?) from the heat and eventually it is too thin to support itself and breaks. That's how I always understood the main failure mode of incadescent bulbs and that's why the above statement confuses me