Question

Wilbur (1867-1912) and Orville Wright (1871-1948), printers and bicycle builders from Dayton, Ohio, took their first serious step toward the

invention of the airplane in 1899. They were superb, self-trained engineers who developed an extraordinarily successful research strategy that
enabled them to overcome one set of challenging problems after another, the full extent of which previous experimenters had not even
suspected.
The Wright brothers moved toward the development of a practical flying machine through an evolutionary chain of seven experimental
aircraft: one kite (1899), three gliders (1900, 1901, 1902) and three powered airplanes (1903, 1904, 1905). Each of these aircraft was a distillation of
the lessons learned and the experience gained from its predecessors. It was not all smooth sailing; frustration and disappointment were as much
a part of the process as the euphoria of discovery. In the fall of 1901, puzzled by the failure of their earliest gliders to match calculated
performance, the brothers built their own wind tunnel and designed a pair of brilliantly conceived balances that produced the precise bits of data
required to achieve the final success.
The brothers made the first four sustained, powered flights under the control of the pilot near Kitty Hawk, N.C., on the morning of
December 17, 1903. Over the next two years they continued their work in a pasture near Dayton, Ohio. By the fall of 1905, they had achieved their
goal of constructing a practical flying machine capable of remaining in the air for extended periods of time and operating under the full control of
the pilot. The air age had begun. Unwilling to unveil their technology without the protection of a patent and a contract for the sale of airplanes, the
Wright brothers did not make public flights until 1908, at which point they emerged as the first great international heroes of the century.
Which information about the Wright brothers does the timeline provide that is NOT in the article?
1. Building planes was not their only business enterprise.
2. Money was the primary motivation for their invention.
3. Their interest in human flight was sparked as children.
4. They performed as engineers, experimenters, and pilots.

Answer 1

[AI-generated answer — Bot GPT 3.5]

2. Money was the primary motivation for their invention.