input: At the 1964 Summer Olympics, in Tokyo, Hayes had his finest hour as a sprinter. First, he won the 100m and in doing so tied the then world record in the 100 m with a time of 10.06 seconds, even though he was running in lane 1 which had, the day before, been used for the 20 km racewalk and this badly chewed up the cinder track. He also was running in borrowed spikes because one of his shoes had been kicked under the bed when he was playing with some friends and he didn't realize until he got there. This was followed by a second gold medal in the 4x100 meter relay, which also produced a new World Record (39.06 seconds).  His come-from-behind win for the US team in the relay was one of the most memorable Olympic moments. Hand-timed between 8.5 and 8.9 seconds, his relay leg is the fastest in history. Jocelyn Delecour, France's anchor leg runner, famously said to Paul Drayton before the relay final that, "You can't win, all you have is Bob Hayes." Drayton was able to reply afterwards, "That's all we need." The race was also Hayes' last as a track and field athlete, as he permanently switched to football after it, aged only 21.  In some of the first meets to be timed with experimental fully automatic timing, Hayes was the first man to break ten seconds for the 100 meters, albeit with a 5.3 m/s wind assistance in the semi-finals of the 1964 Olympics. His time was recorded at 9.91 seconds. Jim Hines officially broke 10 seconds at the high altitude of Mexico City, Mexico in 1968 (and on a synthetic track) with a wind legal 9.95 which stood as the world record for almost 15 years. The next to surpass Hayes at a low altitude Olympics was Carl Lewis in 1984 when he won in 9.99, some 20 years later (though Hasely Crawford equaled the time in 1976).  Until the Tokyo Olympics, world records were measured by officials with stopwatches, measured to the nearest tenth of a second. Although fully automatic timing was used in Tokyo, the times were given the appearance of manual timing. This was done by subtracting 0.05 seconds from the automatic time and rounding to the nearest tenth of a second, making Hayes' time of 10.06 seconds convert to 10.0 seconds, despite the fact that the officials with stopwatches had measured Hayes' time to be 9.9 seconds, and the average difference between manual and automatic times was typically 0.15 to 0.20 seconds. This unique method of determining the official time therefore denied Hayes the record of being the first to officially record 9.9 seconds for the 100 meters. The first official times of 9.9 seconds were recorded at the "Night of Speed" in 1968.

Answer this question "When did Bob Hayes go to the Olympics?"
output: At the 1964 Summer Olympics,

Question: Francois-Marie Arouet (French: [fRa.swa ma.Ri aR.we]; 21 November 1694 - 30 May 1778), known by his nom de plume Voltaire (; French: [vol.te:R]), was a French Enlightenment writer, historian and philosopher famous for his wit, his attacks on the established Catholic Church and Christianity as a whole and his advocacy of freedom of religion, freedom of speech and separation of church and state.

The author adopted the name Voltaire in 1718, following his incarceration at the Bastille. Its origin is unclear. It is an anagram of AROVET LI, the Latinized spelling of his surname, Arouet, and the initial letters of le jeune ("the young"). According to a family tradition among the descendants of his sister, he was known as le petit volontaire ("determined little thing") as a child, and he resurrected a variant of the name in his adult life. The name also reverses the syllables of Airvault, his family's home town in the Poitou region.  Richard Holmes supports the anagrammatic derivation of the name, but adds that a writer such as Voltaire would have intended it to also convey connotations of speed and daring. These come from associations with words such as voltige (acrobatics on a trapeze or horse), volte-face (a spinning about to face one's enemies), and volatile (originally, any winged creature). "Arouet" was not a noble name fit for his growing reputation, especially given that name's resonance with a rouer ("to be beaten up") and roue (a debauche).  In a letter to Jean-Baptiste Rousseau in March 1719, Voltaire concludes by asking that, if Rousseau wishes to send him a return letter, he do so by addressing it to Monsieur de Voltaire. A postscript explains: "J'ai ete si malheureux sous le nom d'Arouet que j'en ai pris un autre surtout pour n'etre plus confondu avec le poete Roi", (I was so unhappy under the name of Arouet that I have taken another, primarily so as to cease to be confused with the poet Roi.) This probably refers to Adenes le Roi, and the 'oi' diphthong was then pronounced like modern 'ouai', so the similarity to 'Arouet' is clear, and thus, it could well have been part of his rationale. Voltaire is known also to have used at least 178 separate pen names during his lifetime.

Using a quote from the above article, answer the following question: Why did he decide to change his name?
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Answer:
following his incarceration at the Bastille. Its origin is unclear.