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A fixed acute angle to a nearby object will cause you to spiral inward toward it.
Quote A fixed acute angle to a nearby object will cause you to spiral inward toward it.What does a fixed obtuse angle do? Why do insects prefer to fly at acute angles? Or do they? Maybe only half the insects are attracted to the light; the other half are repelled. But we see the half that is attracted because they become concentrated in a small space.
... I think that an insect that was trying to keep the moon at an obtuse angle to its fly-path would get a pain in the neck from turning round to see that the moon was still in the right direction as it flew away from it.