Timeout for Tech

Figure 1. Correlation does not imply causation. Sales of fingerless gloves and cases of frostbitten fingers both increase in winter months. But fingerless gloves are not a cause of frostbite. (Courtesy of Gary T. Fry.)
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Timeout for Tech: Correlation vs. Causation

RAILWAY AGE JANUARY 2023 ISSUE: Welcome to “Timeout for Tech with Gary T. Fry, Ph.D., P.E.” Each month, we examine a technology topic that professionals in the railway industry have asked to learn more about. This month, we focus on the issue of correlation vs. causation and how to avoid a common pitfall—mistaking effects as causes.

Managing Failure Risk

RAILWAY AGE, JUNE 2022 ISSUE: Welcome to “Timeout for Tech with Gary T. Fry, Ph.D., P.E.” Before we begin, I want to highlight an upcoming RT&S virtual technical conference that will convene on July

Metal Fracture: The Fatigue Cycle That Really Counts

RAILWAY AGE FEBRUARY 2022 ISSUE: Welcome to “Timeout for Tech with Gary T. Fry, Ph.D., P.E.” Each month, we examine a technology topic that professionals in the railway industry have asked to learn more about. This month our topic is fracture of steel.