content: Catchas are going to require higher and higher IQ Today I saw a new captcha.  It gave you only one option which was to listen to a clip and write what you hear.  I got "one or different algorithms". Jordan Peterson recently pointed out that 10% of the population has an IQ below 85.  There is no way you will be expecting them to spell algorithms much less understand that word was said through extremely fuzzy audio when they don't have that word in their vocabulary.