Read the following paragraph from the article.
 While digital photos sometimes
 can be nothing short of
 spectacular, postcards send
 another message: They're actual
 things. "This was once held in my
 hand. It's a bit of stuff that was with
 me and I chose for you." They bear
 the "fingerprint" of the sender: a
 rare handwritten message,
 whether in elegant swirls or messy
 scrawl.
 What conclusion is BEST supported by the
 paragraph above?