Thanks!

To continue the metaphor's abuse, when we've drilled deep and haven't seen much oil, it could be worth moving to a new spot. Speaking from experience, it's less of a loss than it feels like it is. We'll have learned a lot about sterile ground and we're less likely to waste time in a sterile spot again and boy have we learned a lot about drilling when we do find the right ground.

My main advice to aspiring roughnecks is to drill a lot of test holes. You don't know what's deep in the ground until you've looked in it.