You can read the whole backstory about Tacit here: How Trying to Make a Video Game Created Sonar for the Blind.

FORBES: Assistive Technology Device for the Blind

Unfortunately, the online gamer community has reacted so violently to day-one-DLC that just the whiff of a developer working on extra content before the game has finished has forums exploding in blind fanboy rage.

FORBES: More Games Should Have Day-One DLC

Since it's generally accepted that quarterback, left tackle (who blocks the quarterback's blind side) and defensive end (the big pass rusher) are the premier positions in the game, managers feel pressured to draft them high in order to keep big salaries tied to those positions.

FORBES: Magazine Article