These "if it saves just ONE CHILD" arguments can often be clarified with hard data. How many accidents have occurred to date due to excessive speed on the blind curve?

If the answer is zero, and the curve otherwise meets traffic-engineering best practices, well... stop whining.

If the answer is nonzero, maybe there's a solution other than putting up unnecessary stop signs that will just discourage respect for traffic laws in general.

But we don't have enough data to say for sure in this thread, and emotional appeals don't help at all.