Being reactive

To start with, let's look at the classic definition of reactive programming, and try to understand the concept brought forth by this model. This is important to undo any misconceptions that govern one's mind on this topic.

	In computing, reactive programming is a programming paradigm that maintains a continuous interaction with their environment, but at a speed which is determined by the environment, not the program itself.
	--Gèrard Berry

This implies that this programming model helps, or rather, has an inherent capability to propagate changes without the programmer having to explicitly wire any such logic (the conventional way, which was error prone and rendered programs inconsistent; a nightmare that still haunts some of us). This would mean that the programming model would be declarative and provide the needed constructs (including data structures and interfaces) to capture the relationship between attributes in order to ensure seamless propagation or synchronization of...