Issue type:

• ❓ Question

Question:

Some very simple testing on a throwaway world shows that copied variables still function in writers. This may be a more technical question but why do variables need (or should they) have unique ids? I feel like the evaluation tree would remain consistent even if you had duplicates.

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Indeed, duplicate variable id's for variables that are only used for writing shouldn't be a problem.

The problem only occurs for variables that are used as input to other operator-based variables, as the network would have to choose between multiple variables with equal id's during input argument resolution.