Statistics for Top 50 Inventions in History

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#	Invention	Year	% Correct
18	The Automobile	Late 19th Century	81%
16	The Personal Computer	1970s	79%
45	Television	Early 19th Century	73%
2	Electricity	Late 19th Century	71%
24	The Telephone	1876	71%
1	The Printing Press	1430s	69%
6	Paper	2nd Century	64%
15	The Airplane	1903	64%
28	Radio	1906	54%
14	Gunpowder	10th Century	52%
5	Optical Lenses	13th Century	45%
9	The Internet	1960s	45%
10	The Steam Engine	1712	44%
8	Vaccination	1796	39%
21	Nuclear Fission	1939	35%
17	The Compass	12th Century	34%
26	The Telegraph	1837	33%
3	Penicillin	1928	32%
13	Refrigeration	1850s	30%
41	Rocketry	1926	28%
19	Industrial Steelmaking	1850s	27%
32	The Cotton Gin	1793	27%
40	The Sailboat	4th Millenium B.C.	27%
27	The Mechanized Clock	15th Century	23%
44	Air-Conditioning	1902	19%
29	Photography	Early 19th Century	18%
30	The Moldboard Plow	18th Century	16%
25	Alphabetization	First Millenium B.C.	14%
37	Cement	First Millenium B.C.	13%
7	The Internal Combustion Engine	Late 19th Century	13%
42	Paper Money	11th Century	12%
49	The Assembly Line	1913	11%
20	The Pill	1960	11%
33	Pasteurization	1863	10%
43	The Abacus	3rd Millenium B.C.	10%
50	The Combine Harvester	1930s	7%
34	The Gregorian Calendar	1582	7%
47	The Nail	2nd Millenium B.C.	7%
46	Anesthesia	1846	6%
12	Sanitation Systems	Mid-19th Century	4%
23	The Sextant	1757	4%
48	The Lever	3rd Millenium B.C.	3%
31	Archimedes' Screw	3rd Century B.C.	1%
36	The Steam Turbine	1884	1%
11	Nitrogen Fixation	1918	0%
39	Oil Drilling	1859	0%
35	Oil Refining	Mid-19th Century	0%
38	Scientific Plant Breeding	1920s	0%
4	Semiconductor Electronics	Mid-20th Century	0%
22	The Green Revolution	Mid-20th Century	0%