Ahh, MAD Sector. It is headquarters for all of R&D, home of the CPU Hall Of Blame, and of course the legendary R&D Academy. Only the most promising clone families attend there. I, of course, was one of them, graduated at the Top of my class (Almost 3 of us survived to graduating day! It was a huge turnout that year.) Much later on, I taught there. In fact, it was while teaching there that I invented the science of Anger_Management. You'd be surprised how many MAD clones are angry all the time. I still fill in when an instructor gets vaporized or dissapeared.
But It's a great sector all-in-all. Besides the Experimental Food Court, there are dozens of shops and hundreds of convenient advertising terminals, describing the wonders of thousands of new items for purchase, many of which have prices so low, taking advantage of these opportunities is required by law (see Laws_of_Alpha_Complex_ed._39/B.3.9.) You may have heard of MAD Sector's revolutionary new lottery naming process - where in a process similar to the way Codemonkeys produce new software for our Friend Computer, a series of randbots battle to the death for the right to contribute the next Personal Name.
Few know however that MAD sector has both the highest percentage of registered mutants in all of Alpha Complex, and almost always meets it's catastrophic explosions quota as required by the New, Improved Catastrophic Explosions Quota Distribution Table and Treasure Map (see Section 3B24.1 - 3B24.2, in same ed. as above.) These mutants are put to good use in MAD sector, generally as test subjects for various radiation, biochemical, and culinary experiments. The academy has this one class where for the final test, you have 20 minutes to determine a mutant's mutation by any means you choose. Most choose dissection, but there are chemical tests and psychological tests that can be used effectively as well.
Toothpasty_Supplement_#5 was created in MAD sector, I believe it was discovered growing in an old unused food vat. It's addictive properties were not generally known before the ToothpasteRebellion. But many of us knew. TS5 was the most significant substance to explode upon the MAD sector scene in yearcycles. And that is saying a LOT.
Although I enjoy NIX sector, my residence in MAD is my favorite. You (those of you who aren't sending squadrons to kill me, that is) are all welcome to stop on over sometime and watch the infrared feedings. We have our feederbots wired up to deliver a deadly shock when we tell it to, it never gets old.