2010

2010 (MMX) was a common year starting on Friday (dominical letter C) of the Gregorian calendar, the 2010th year of the Common Era (CE) and Anno Domini (AD) designations, the 10th year of the 3rd millennium, the 10th year of the 21st century, and the 1st year of the 2010s decade.

2010 was designated as:

Pronunciation

There is a debate among experts and the general public on how to pronounce specific years of the 21st century in English. The year 2010 is pronounced either "two thousand (and) ten", or "twenty-ten". 2010 was the first year to have a wide variation in pronunciation, as the years 2000 to 2009 were generally pronounced "two thousand (and) one, two, three, etc." as opposed to the less common "twenty-oh-_".

Events

January

Randomness

Randomness is the lack of pattern or predictability in events. A random sequence of events, symbols or steps has no order and does not follow an intelligible pattern or combination. Individual random events are by definition unpredictable, but in many cases the frequency of different outcomes over a large number of events (or "trials") is predictable. For example, when throwing two dice, the outcome of any particular roll is unpredictable, but a sum of 7 will occur twice as often as 4. In this view, randomness is a measure of uncertainty of an outcome, rather than haphazardness, and applies to concepts of chance, probability, and information entropy.

The fields of mathematics, probability, and statistics use formal definitions of randomness. In statistics, a random variable is an assignment of a numerical value to each possible outcome of an event space. This association facilitates the identification and the calculation of probabilities of the events. Random variables can appear in random sequences. A random process is a sequence of random variables whose outcomes do not follow a deterministic pattern, but follow an evolution described by probability distributions. These and other constructs are extremely useful in probability theory and the various applications of randomness.

Hello

Hello is a salutation or greeting in the English language. It is first attested in writing from 1833.

First use

Hello, with that spelling, was used in publications as early as 1833. These include an 1833 American book called The Sketches and Eccentricities of Col. David Crockett, of West Tennessee, which was reprinted that same year in The London Literary Gazette.

The word was extensively used in literature by the 1860s.

Etymology

According to the Oxford English Dictionary, hello is an alteration of hallo, hollo, which came from Old High German "halâ, holâ, emphatic imperative of halôn, holôn to fetch, used especially in hailing a ferryman." It also connects the development of hello to the influence of an earlier form, holla, whose origin is in the French holà (roughly, 'whoa there!', from French là 'there'). As in addition to hello, halloo,hallo, hollo, hullo and (rarely) hillo also exist as variants or related words, the word can be spelt using any of all five vowels.

Telephone

The use of hello as a telephone greeting has been credited to Thomas Edison; according to one source, he expressed his surprise with a misheard Hullo.Alexander Graham Bell initially used Ahoy (as used on ships) as a telephone greeting. However, in 1877, Edison wrote to T.B.A. David, the president of the Central District and Printing Telegraph Company of Pittsburgh: