User:Yironaldliu/sandbox

A raven is one of several larger-bodied members of the genus Corvus. They have black plumage and large beaks. In Europe and North America the word "raven" normally refers to the Common Raven.

Why Change
Understanding and describing change is a common theme in the natural sciences, and calculus was developed as a powerful tool to investigate it. Functions arise here, as a central concept describing a changing quantity.

Why Now?
Google Now is an intelligent personal assistant developed by Google. It is available within the Google Search mobile application for the Android and iOS operating systems, as well as the Google Chrome web browser on personal computers. Google Now uses a natural language user interface to answer questions, make recommendations, and perform actions by delegating requests to a set of web services. Along with answering user-initiated queries, Google Now passively delivers information to the user that it predicts they will want, based on their search habits. It was first included in Android 4.1 ("Jelly Bean"), which launched on July 9, 2012, and was first supported on the Galaxy Nexus smartphone. The service was made available for iOS on April 29, 2013 in an update to the Google Search app, and later for Google Chrome on March 24, 2014. Popular Science named Google Now the "Innovation of the Year" for 2012.[3]

Customer Profile
A customer (sometimes known as a client, buyer, or purchaser) is the recipient of a good, service, product, or idea, obtained from a seller, vendor, or supplier for a monetary or other valuable consideration.[1][2] Customers are generally categorized into two types: An intermediate customer or trade customer (more informally: "the trade") who is a dealer that purchases goods for re-sale.[3][1] An ultimate customer who does not in turn re-sell the things bought but either passes them to the consumer or actually is the consumer.[3][1]

Objections Handling
In informal logic an objection (also called expostulation or refutation), is a reason arguing against a premise, lemma, or main contention. An objection to an objection is known as a rebuttal.