Notice how changing the value of the slider, will then adjust the value of the numeric text field as well. The Numeric Text Field is changing to match the value set by the slider. This can be useful to provide visual feedback to what a user is doing. The operator would input something, and they would see another component adjust to match the setting they just changed. Notice though how If I were to change the value of the Numeric Text Field, the Slider will not update. Bindings are one direction only by default.