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Re: more srfi-12 rationale?

>> * Why do we need a new condition type, disjoint from other Scheme
>> values, with 5 new operations, some of which are quite non-trivial?
> Shriram Krishnamurthi <shriram@xxxxxxxxxxx> responded:
>> All of this is also true of continuations.

I agree with Per and Dave: exceptions are nice but conditions
can be dropped / moved to another SRFI. The best abstraction
to recognize particular kinds of values is a predicate; specifying
exact representation, no matter how "normal" it is, just reveals 
unnecessary implementation details.

-- Sergei