this clearly has nothing to do with the current main usages of LLMs, it's about using natural language as an interface to produce accurate results, as a further abstraction on top of general purpose languages.
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We will see if and when an algorithm can be parsed and executed from a natural language "source code" and if that is an improvement.
Also note that "source code" implies it is a code. Natural languages are not a code, that is, a unique mapping from a set to another.