With the Amazon Echo, you ask Alexa to play songs, get the weather, and report scores. Those skills, as they're called, have an open API for building conversational apps. Flask-Ask is an Alexa Skills Kit for Python that makes programming the Amazon Echo super easy.
Proximity is closeness. However, elements lacking close proximity can be unified by introducing a third element. An example: an arrow connecting a text label in the margin with a point in the middle of a map. In this way a relationship or unity can be achieved between elements that are far apart but belong together.
The most obvious example of aesthetic distance (also referred to simply as distance) occurs with paintings. Some paintings require us to stand back to see the design of the whole painting; standing close, we see the technique of the painting, say the brush strokes, but not the whole.