Sheet metal design packages are very specialised program's using unique calculations specifically used for the sheet metal industry only, it considers the metal used along with values like tensile strength, Young's modulus, yield strength etc, to determine the end result and behaviour of bent or formed metal. So if Michael is considering studying metallurgy then we will probably see it In MoI V7 or when it becomes 'Autodesk MoI' ;)

Merry Chistmas