This is a pretty baseless post. Like riferguson said, the questions span many disciplines hence some are technical and other are very broad. The OP is wondering

This is a pretty baseless post. Like riferguson said, the questions span many disciplines hence some are technical and other are very broad. The OP is wondering if Microsoft's practices work? No, no company is hiring 100% coding geniuses all the time. However, Microsoft, despite their public appearance sometimes, always has some of the smartest programmers and researcher alive today working for them. I was interviewed there a few weeks ago and the questions I got were much more related to the team's tasks. Most were coding but a few where design architecture but all were quite relevant (ie no linked list stuff, though there was a BST question).