If I create a big shere with a constans material in XSI and put for example a plane with a shere inside this spere, turn on GI for the light and the objects, then how come I dont see one of those soft round shadows GI usually causes? If I do the same in for example Lightwave it creates a nice shadow under the sphere. is this because LW has radiosity and not GI as XSI? Whats it the difference between GI and radiosity?