a: firewall ~
b: not accepting incoming calls
What:
" A firewall is like having a telephone system that doesn't accept any incoming calls, but that lets you place outgoing calls. As a result, you can still have conversations with other people, you've just got to be the one who starts them."
Useful?
Writer: Not Stated
LCC:
Where:
Date: May 30 2016 1:01 PM
# 10011 Critique Analogy