Board Thread:General Discussion/@comment-31371445-20170222233857/@comment-31536324-20180908171200

"According to the first plaque, human souls have a power called "soul strength". Next, on the following plaque, the term "soul power" is used as a synonym for soul strength. And finally, it is described what this power does. This description matches the definition of Determination."

1. The exact quote of the 1st plaque is: "But humans have one weakness. Ironically it is the strength of their SOULs." SOUL Power, as Alphys cited it and how we're all using it, is never mentioned. All this says is that humans actually DO have a weakness, that they're not invincible.

2. The exact quote of the second plaque is: "It's power allows it to persist outside the human body, even after death" Now, I agree that this means that both plaques are talking about DT. HOWEVER! The flaw here is that there lacks a proper connection between the SOUL Power that powers and locks the Barrier, and the SOUL Strength that not only is DT, but also the one weakness of humans. You said it yourself, your correlation is only your assumption.

However, this also proves that DT CAN fluctuate in humans as well! The one weakness of DT is a lack of it, an infirmity of purpose, Irresolution, Vacillation, Doubt, whatever you want to call it. By saying that DT is the humans greatest strength and weakness, the game is all but shouting that humans can gain, lose, and regain DT like any other being in the world of Undertale.