deeds have a ripple effect in society. When you show kindness to one
person, you inspire the kindness in others. Who's to know what the
next person will do for someone else?"
One good deed will lead to another, and that to another and so on.
An interesting note - a study(read about that study here) found that people who watched a documentary on Mother Teresa felt
more loving afterward and were more likely to volunteer for charitable
work than a group that saw clips from America's Funniest Home Videos.
So my deductive logic from that is; People who watch Short clips on Paying it Forward are more likely to do a good deed ! :D