"Good security practices require us to use different passwords for most or all of the websites .... remembering all of your passwords requires an inhuman display of memory."

It actually is possible to create unique passwords for every website and remember them without inhuman displays of memory. To do so, there are two basic things you need to remember:

1) A unique base password 2) A simple hashing function

The input to the hashing function can be the company's name or website address (an overly simplified example - your hashing function could be the first two characters of the website's domain name). A unique password for any website could then be:

password = hash_function(domain) + base_password

A very simple way to create unique passwords for every website, inhuman memorization skills not required.