Ideas and products and messages and behaviors spread just like viruses do.

What happens when two people talk? That is really the basic question here, because, that's the basic context in which all persuasion takes place.

There can be as much value in the blink of an eye as in months of rational analysis.

Did they know why they knew? Not at all. But the Knew!

You can learn as much - or more - from one glance at a private space as you can from hours of exposure to a public face.

The Tipping Point is the biography of an idea, and the idea is very simple. It is that the best way to understand the emergence of fashion trends, the ebb and flow of crime waves, or, for that matter, the transformation of unknown books into bestsellers, or the rise of teenage smoking, or the phenomena of word of mouth, or any number of the other mysterious changes that mark everyday life is to think of them as epidemics. Ideas and products and messages and behaviors spread just like viruses do.

Since becoming a journalist, each time I engage with subjects I become more radicalized.