A model is a good model if first it interprets a wide range of observations in terms of a simple and elegant model, and second if the model makes definite predictions that can be tested, and possibly falsified, by observation.

You cannot predict the future.

If time travel is possible, where are the tourists from the future?

There is no heaven or afterlife for broken down computers; that is a fairy story for people afraid of the dark.

Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space.

Just like a computer, we must remember things in the order in which entropy increases. This makes the second law of thermodynamics almost trivial. Disorder increases with time because we measure time in the direction in which disorder increases. You can't have a safer bet than that!

It is tribute to how far we have come in theoretical physics that it now takes enormous machines and a great deal of money to perform experiments whose results we can not predict.