That your normal brain alone could never achieve?
To be able to recall in chronological order as many historically-reverent worldwide events, facts, tidbits, etc., as possible, much like the savants who can conjure up intricate information right off the top of their heads.
To make economic and/or personal finance decisions with such stunning accuracy that very little of my money is misspent, wasted, squandered, lost, etc.
To study the Holy Bible so thoroughly that I could understand and be able to intelligently discuss it with the acumen of a seminarian or theologian.
~
Both you and I were in that same boat, my Brother.
~
Grammar is fun. English is fun. History is fun. Math is ok.
~