In Scientific American, February 2000, he wrote:
"Many observers have been alarmed at the apparent increase [of failures], which could be a symptom of deeper problems that could lead to more failures in the future. . . . NASA will have to address its systemic weaknesses if it is to avoid a new string of expensive, embarrassing and perhaps in some cases life-threatening foul-ups."

In New Scientist, April 15, 2000, he wrote:
"Critics say that a number of accidents, oversights and failures in other NASA programmes indicate that other parts of the organisation are stretched to breaking point. NASA, they say, is repeating the errors that led to the Challenger disaster. The consequences of a future accident could, also, be fatal.. . . The cost of forgetting is now measured in hundreds of millions of dollars, years of delay and public humiliation. So far, no more human lives have been lost but the question NASA must answer is whether this will continue."

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