"Wait, that didn't work right" - the Dysfunctional Rules Collection

[hewhosaysfish]

If your HP is less than 0, your non-lethal damage (0) exceeds it and you fall unconscious.

So we demand proof that being "dead" means you can't act but are prepared to accept without question that being "unconscious" will be a hindrance?

Nowhere does it say that an unconscious can't take actions.

Knocked out and helpless. Unconsciousness can result from having current hit points between -1 and -9, or from nonlethal damage in excess of current hit points.

But wait! "Helpless" also has a definition (even if "knocked out" doesn't).

Helpless:

A helpless character is paralyzed, held, bound, sleeping, unconscious, or otherwise completely at an opponent’s mercy. A helpless target is treated as having a Dexterity of 0 (-5 modifier). Melee attacks against a helpless target get a +4 bonus (equivalent to attacking a prone target). Ranged attacks gets no special bonus against helpless targets. Rogues can sneak attack helpless targets.

As a full-round action, an enemy can use a melee weapon to deliver a coup de grace to a helpless foe. An enemy can also use a bow or crossbow, provided he is adjacent to the target. The attacker automatically hits and scores a critical hit. (A rogue also gets her sneak attack damage bonus against a helpless foe when delivering a coup de grace.) If the defender survives, he must make a Fortitude save (DC 10 + damage dealt) or die.

Delivering a coup de grace provokes attacks of opportunity.

Creatures that are immune to critical hits do not take critical damage, nor do they need to make Fortitude saves to avoid being killed by a coup de grace.

Emphasis mine.

Ability Damage:

The character has permanently lost 1 or more ability score points. The character can regain drained points only through magical means. A character with Strength 0 falls to the ground and is helpless. A character with Dexterity 0 is paralyzed. A character with Constitution 0 is dead. A character with Intelligence, Wisdom, or Charisma 0 is unconscious.

Emphasis mine.

Paralyzed:

A paralyzed character is frozen in place and unable to move or act. A paralyzed character has effective Dexterity and Strength scores of 0 and is helpless, but can take purely mental actions. A winged creature flying in the air at the time that it becomes paralyzed cannot flap its wings and falls. A paralyzed swimmer can’t swim and may drown. A creature can move through a space occupied by a paralyzed creature—ally or not. Each square occupied by a paralyzed creature, however, counts as 2 squares.

Again, emphasis mine.

So what can we see?
A "dead" character may not take actions apart from purely mental ones.

Thus, psionics is broken. QED.