If it looks like a duck, waddles like a duck, is covered in feathers, likes swimming in lakes, reminds you of hoisin sauce, and regularly quacks .....
..... it probably isn't a white rhino.
Personally, though it's based on interpreting an accumulation of evidence, each item of which is far from conclusive on it's own, the overall picture convinced me, some time ago, that MS was indeed the species of duck I though it was.
Pass me the hoisin, please.