From SRFI-57

The traditional practice of instantiating record values with a positional constructor procedure can lead to code that is hard to read and fragile under common operations such as adding, removing, or rearranging field declarations.

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From: "Michael R. Blair"

​Reference

I am concerned that the current proposal makes it difficult for me to treat the order of slot-names in a record as irrelevant. About record constructor: What I want is a construction procedure wherein (arg) order is considered irrelevent.