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They knew where they started from. Know where the target is relative to the start point.

> Know where the target is relative to the start point.

How? Without GPS, it's navigation capabilities lower than V-2 rocket.

You need to read a bit more on autonomous systems and navigation, it will surely tame your hubris. Everything is simple if you don't understand it.

You have never written autonomous navigation systems.

I have in fact. For space applications. An now I will stop replying to what is seemingly a stubborn, clueless 16 year old.