Abilities I did not (originally) know it was possible to lack:
• When someone describes a song as being in a major key, and says to assume it’s in C major and the melody line goes C, C, G, G, A, A, G, you honestly can’t tell that the song can’t possibly be “Free Bird” and also can’t quite be “old MacDonald Had a Farm” but that “Twinkle Twinkle Little Star” could definitely be it.
• When someone says “Hey, does ‘Twinkle Twinkle Little Star’ use the same melody as the ‘ABC’ song, the alphabet song”?, you don’t immediately realize (if you did not already know) that yes indeed it’s the same music.
• That if someone asks you which note is the place where the chord changes, you can’t just tell that it changes on “Little”, on the first A after the C, C, G, G. And that it changes from a major C chord to a major F chord
Abilities I don’t have that many other people seem to:
• They can walk into a building from the sidewalk, make various turns in the corridors, get into an elevator, get off the elevator on a different floor, and when asked point in the direction of the sidewalk they came in from.
• They can meet 10 people at a party that they’ve never seen before in their life and not only can they recognize them as someone they’ve seen before if they see them later the same week, they can identify them by name.
• If told that Column C equals Column A times Column B, and told to eyeball a spreadsheet of some 20,000 rows, they can skim down page after page and stop short on row 9496 to say “this isn’t right; you’ve got 13401 in Column A and 7961 but Column C says 66505, so something’s way off”.