You can complete the game just fine (although it's a little weird when suddenly during one animation you have all 3, while all the other time it's 2/1).
I think a more correct term is "Exploit".
Sam: "We're 98% certain General Skun-ka'pe is evil."
Stinky: "And the other 2%?"
Max: "That he's crazy and we have to shoot him! But that may be wishful thinking on our part."
(Any resemblance to KOTOR is purely coincidential, really!)