Ali Ok Request on set the thread that the request runs on.
Respond on sets the thread the request reposnds on
Respond with sets the responded that handles the result of the request.

The request follows the a cold single observable pattern which means that the request isn't run until you attach a responder.

This is documented in the following places :
https://github.com/aerogear/aerogear-android-sdk/blob/master/core/src/main/java/org/aerogear/mobile/core/reactive/Request.java#L7
https://github.com/aerogear/aerogear-android-sdk/blob/master/core/src/main/java/org/aerogear/mobile/core/reactive/Request.java#L13
http://reactivex.io/documentation/