I would never complete this set-up. DEX 6 and so on.*
Might be amusing to compute the entropy in domino arrays and then examine probabilisticly what the largest array your DEX permits you a reasonable chance of completing rather than having a catastrophic failure during construction. A rather roundabout way of finding a conversion between DEX and energy, kind of, in HERO terms.
*EDIT: this leaves out the three feline chaos emitters I dwell with.
I've usually seen history (unspecified, regional, national, etc.) categorized among the social sciences rather than the humanities. Art history does get put into the humanities, though.