Below is my attempt to list all human needs ranked according to their typical importance (from most important to least). Thanks for the idea, Maslow! I'm defining a "need" here as something non-replaceable (i.e., you can't just substitute it for something else), which, if substantially unsatisfied, would inhibit well-being for the vast majority of people. You might say that you "need an iced tea" on a hot day, but it could be easily replaceable with lemonade or iced coffee, s...