Question 1

How is expected attempts per step calculated?

Accepted Answer

Expected attempts = sum_{k=0}^{maxRetries} k * (1-p)^k * p, where p = success probability per attempt. This geometric series accounts for up to maxRetries retries.

Question 2

What does the cost multiplier mean?

Accepted Answer

Cost multiplier = expected total cost (with retries) / baseline cost (no failures). It shows how much retries inflate the original cost.

Question 3

How do I interpret 'most fragile step'?

Accepted Answer

The step with the highest expected cost contribution (cost per attempt × expected attempts) is the biggest cost driver, indicating fragility.

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