And what we saw yesterday was every reaction was fortuitous they just swooped in the air and bound, and something happened.

History will record that the match Bouazizi lit on December 17, 2010, became the fortuitous spark that ignited an Arab prairie fire.

As this source of this iron is extremely rare and fortuitous, little development of smithing skills peculiar to iron can be assumed to have occurred.

Even if fortuitous events lead to a better Middle East in another ten years, future historians will criticize the way Bush made his decisions and distributed the risks and costs of his actions.

And if you don't understand that in your mental model of this stuff, what happens inside of a cell seems completely mysterious and fortuitous, and I think that's exactly the wrong image for when you're trying to teach science.