Ready, fire, aim…
We often talk about hitting targets when we develop software. We're not actually firing anything at the shooting range, but it's still a useful and very visual metaphor. In particular, it's interesting to consider how to hit a target in a complex and shifting world.
The answer, of course, depends on the nature of the device you're aiming with. With many you only get one chance to aim, and then get to see if you hit the bullseye or not. But there's a better way.
You know all those movies, TV shows, and video games where people are shooting machine guns? In these scenes, you'll often see the path of bullets as bright streaks in the air. These streaks come from tracer bullets.
Tracer bullets are ...