[Strategerist]

Constructing the path to be taken, by a comet, is nearly a shot in the dark. Comets appear from nowhere, and the calculations are normally thirty percent to forty percent correct on the path

Sorry, this is completely wrong.

the orbit has already been calculated with quite high precision in just a few days.

The uncertainty lies with how bright it gets - THAT is a shot in the dark. Or whether the comet breaks up as it approaches the sun.

[no-to-illegals]

May you be correct. Sometimes though one does not plan for the wrench to go into the works. That wrench can be wicked for tearing up things, even the best of calculations. May you be correct though.