Put card than your security code and than put in or take out money
It Seeks To Explain Or Inform
Yes we use them for necessities everyday
Huxley is commenting that most people in society prefer to live in "happy ignorance" as opposed to having knowledge. The stars, or truth, are "depressing."
This is because that many find the truth upsetting and would prefer to live in the dark. Huxley is saying that for many, ignorance is bliss.