It's useful to memorize things like DLN and SS so you don't have to whip the cards out when filling out forms like... applying for a drivers license.
I don't have to memorize my cell phone number (even though I do anyway), it displays the number every time I turn it on.
I also make extensive use of the phone book it provides, so I don't have to memorize other people's cell phone numbers.
I don't have to memorize my cell phone number (even though I do anyway), it displays the number every time I turn it on.
I also make extensive use of the phone book it provides, so I don't have to memorize other people's cell phone numbers.