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It is more than that.

This is what make remote debugging possible. It is impossible to do interactive remote debugging over a ultra low bandwidth link. If everything have static address and deterministic static, you can have a exact copy on ground and debug there.

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> If everything have static address and deterministic static, you can have a exact copy on ground and debug there.

You can also have deterministic dynamic - the satellite could transmit its dynamic state (a few bits signifying which memory cells failed) and then you proceed deterministically on the ground.

Interactive debugging is apparently possible and was reportedly done on Deep Space One mission. One of developers involved frequents HN I believe.

Kind of. That took hours of not days.

A local exact replica with deterministic state save lots of time.

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