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Re: problems with beaming

To Lee,

>>The problem is that the feedback may take upto 10 ly (for deceleration), any
>>prediction would probably be meaningless.
>Actually, no. The base course of the ship is known and fairly stable, as for
>feedback, the reflection off of the sail provides a built-in feedback
>mechanism better than anything we could build.

This assumes the starship can keep exact (within 0.5 km deviation) course
all the time, I'm not convinced about that.
If you can make everything work with such a slow feedback, then I think that
you don't even need feedback.