Be approximately right rather than exactly wrong.

All we know about the world teaches us that the effects of A and B are always different-in some decimal place-for any A and B. Thus asking "are the effects different?" is foolish.

An approximate answer to the right problem is worth a good deal more than an exact answer to an approximate problem.

When communicating results to non-technical types there is nothing better than a clear visualization to make your point.

This is my favorite part about analytics: Taking boring flat data and bringing it to life through visualization.

The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data.

To be able to say that "if we change our point of view in the following way ... things are simpler" is always a gain.