Topic: Why can't output values be set by scripts? - page 2. (Read 1801 times)
It could maybe be safely allowable, but a huge amount of Bitcoin code would have to be rewritten, as it is assumed throughout the code that output values are fixed. Transaction checking would also be greatly complicated because you'd need to calculate the remaining balance of a transaction before you allow any of the other outputs to be spent. This would also cause new forms of transaction conflicts. There may be other problems, as well.
Transaction validity has to be independent of all external state, otherwise you can't decide whether to include/relay it or not. Allowing output scripts to choose output values would make tx validity impossible to determine, as the outputs might sum to more than the inputs.
because there is no need for it!
Are there any cases where it might be acceptable?
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