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That's right, fax machine. I, for one, never learned to use a fax machine, because that technology was obsolete before it would have served any purpose in my life.
Dorothy Miller, an 80-year-old grandmother who adores Celery, uses her fax to send tweets to her family -- everyone except for her daughter. "I don't usually write to my daughter too much," she says, "because she talks too much and it takes up too much of my time." Check out Miller's glowing endorsement below.