17:28 While for a huge expansion project, it might take a 25K variance. It makes the sensitivity appropriate to the scale. Ah, context-aware alerting. That's smart. Ensure small project variances don't slip through the cracks. Exactly. Tailors the vigilance. Okay, this has been incredibly insightful. We've gone through the whole agile capital allocation framework, the tiers, gates, tracker, form, advanced tools, even the pitfalls. So for someone listening who thinks, wow, I need this, what are the first practical steps they can take?