origin of ‘cloud-cuckoo-land’

a realm of fantasy, dreams or impractical notions—1856 as ‘cuckoo-cloud-land’—from the name of the city built by the birds in ‘The Birds’, by Aristophanes

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origin of the word ‘captcha’

early 21st century—acronym from ‘Completely Automatic Public Turing test to tell Computers and Humans Apart’, with punning allusion to ‘capture’ and ‘gotcha’

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