[snip]

You use the basic blacklist - whitelist basically not required. The
library or store won't be on the "universal" blacklist.. Nor will your
friends' friend's phone your friend borrowed. If you get a call from
a caller you don't want to hear from a gain you add it to the
"personal" blacklist.

That blacklist won't include the 8 numbers junk callers use today, the
12 (different) ones they use tomorrow, the 9 new ones they use the next
day, ....

[snip]
--
2 days until the winter celebration (Friday December 25, 2015 12:00:00
AM for 1 day).

Mark Lloyd
http://notstupid.us/

"An idea is an eye given by God for the seeing of God. Some of these
eyes we cannot bear to look out of, we blind them as quickly as
possible." [Russell Hoban, "Pilgermann"]