Ugh. Any angler knows that a fish circling a lure is ready to bite. It is the most important moment in the sequence. It’s not hesitation. It’s the last check before commitment. A better lure doesn’t make fish circle more when they already circle. You need the lure to reduce circle to less time, because it passes final inspection sooner.

With that in mind, a whole study just released about mosquito flight path analysis reads wrong to me.

Deciphering mosquito host-seeking behavior is essential to prevent disease transmission through mosquito capture and surveillance. Despite recent substantial progress, we still lack a comprehensive quantitative understanding of how visual and other sensory cues guide mosquitoes to their targets.

They built a model that predicts flight paths. What they should have built is a model that predicts target rejection. The circle is the authentication window. Every mosquito that circles and leaves is telling you exactly which credential your trap failed to present. CO2 got them to the door. The silhouette got them to slow down. Something in the final check bounced them.

Why?

That’s why the flight path geometry is the least interesting part of their own data. The interesting data is the authentication failure rate and what correlates with it.

Which mosquitoes completed the approach and which ones broke off? At what point in the circle? Facing which part of the target? That’s where the species-level targeting logic lives.

Maybe I need to fish less but the parallel goes further. Nobody studies the shape of a fish’s approach path to improve lure design. We study what makes a fish strike or turn away. The strike-to-rejection ratio is the metric. Everything else is circular.

Twenty million mosquito data points? That’s a lot of circles for nothing.