Cut Skills

During E3 footage was shown of all the skills in Deus Ex at that point, including three skills that were cut from the final release.

Brawling
The Brawling skill was likely intended for the cut fists weapon. It is unknown why the weapon was cut but with the removal the skill was made redundant.

Communication
The Communication skill was made for conversation choices, with some conversation choices only appearing when the player had the communication skill at the required level. This skill was eventually cut and the functionality remains in the code, but remains unused.

Stealth
It is unknown what the Stealth skill was used for.