huinventors1-7, Exercise 1: A discovery, and paprika

Model answer:

Vitamin C is a discovery because it is a substance that already existed, and Szent-Györgyi found and identified it as the anti-scurvy factor. An invention is a thing or method that did not exist before. Paprika mattered because it proved an unusually rich and cheap source at Szeged, which gave enough of the substance to show that it cured scurvy in guinea pigs. The credit was shared with collaborators and with Norman Haworth, who worked out the chemical structure. Details should be checked, and the dinner-table anecdote is best treated as a legend.