And when our betters make nice and the money's traded hands and they need something to show for this big investigation, who do you think's gonna be first in the firing line?

And it's starting to look at -- not always and not for everything -- but in certain moments of time, access to certain kinds of goods and service will trump ownership of them.

They want positive actions they can engage in, and in their bones, they know it's time to take personal responsibility and invest in more kindness to each other and to the environment.

And the key idea is that the mathematical solution of this class of models exhibit finite-time singularities, which means that there is a critical time where the system will break, will change regime.

So now I ask you, how do I feel when the time finally comes and there's another dark night, sometime between midnight and 2 a.m.?

Because sooner or later, we'll be confronted with decisions about this, and it's better if we think hard about it, even if we want to think hard about reasons why we should never do it.

After all, we humans are animals, too, and it's time for us physicians to embrace our patients' and our own animal natures and join veterinarians in a species-spanning approach to health.

It is time to ask ourselves, have the assumptions and policies we developed in the wake of those tragic events truly made us more secure?

Some researchers have begun to ask these questions about certain signs at specific sites, but I believe the time has come to revisit this category as a whole.

Wonderful as they are, I believe the time has come for us to complement these bulky electronic giants with what nature has already invented: the microbe, a single-celled organism that is itself a self-generating, self-replenishing, living machine.

And I've never questioned that someday, we'll reach a point where we'll be content.

And in that moment she said the one thing I had overlooked, and that was that at some point, my life would get back to normal.

I don't have the final answer to this riddle, but I think as a starting point, we need society to come together to decide what trade-offs we are comfortable with and to come up with ways in which we can enforce those trade-offs.

A person comes out, they live for a thousand years doing whatever they do, and then, when it's time to go back for a billion years -- or a million, I forget, the numbers don't matter -- but there really aren't very many people on Earth at a time.

But that is, in principle, the way you solve the "fever of unexplained origin" problem, because each one of those spots then becomes a test for a particular set of markers of disease, and this will work in due course.