+A threshold marks a critical point where a stimulus or condition begins to produce a new effect or state. It signifies the boundary between two distinct phases, a [Beginning](/wiki/beginning) and what lies beyond, often implying a [Transition](/wiki/transition) into something new.
+## See also
+- [Limit](/wiki/limit)
+- [Boundary](/wiki/boundary)
+- [Phase Change](/wiki/phase_change)
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