I guess what makes it even more intriguing is the fact that the first 2 tracks do have something in the centre - horns, for example. Then, presuming the tracks were mixed in album order, the mixer thought, "Nah... sod this centre channel for a lark. Can't be arsed using that! But I'll leave it in the first 2 songs. Coz nobody'll think that's weird. It's only Michael Jackson after all and possibly the most important pop album of all time. Nobody will probably even notice!"
Hilarious. Would love to have been there when that decision was made. And then you hear something like the new Weyes Blood album which sounds as if it was mixed by some kind of surroundscape genius. Honestly, I would love to meet some of these mixers and just ask them: WTF, dude?!
Rant over. Well, possibly.