As for comments about conclusions on art
As for comments about conclusions on articulation. If you cannot articulate it then I too agree, you do not know it. If you can articulate it then you do. The ONLY way we as human beings can prove our knowledge is to articulate it. SPEAK ENGLISH articulate what you know or get lost.
As for venom spewing, if you cannot hang with the truth, then you must be a liar. If you do not know the most common functions you cannot know MDX. If you need this artile to help you get a job then maybe you deserve the job but do NOT tout yourself as an expert in BI or SSAS