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The acceptance and success of these flights is taken as evidence of safety. But erosion and blow-by are not what the design expected. They are warnings that something is wrong. The equipment is not operating as expected, and therefore there is a danger that it can operate with even wider deviations in this unexpected and not thoroughly understood way. The fact that this danger did not lead to a catastrophe before is no guarantee that it will not the next time, unless it is completely understood. When playing Russian roulette the fact that the first shot got off safely is little comfort for the next. The origin and consequences of the erosion and blow-by were not understood. They did not occur equally on all flights and all joints; sometimes more, and sometimes less. Why not sometime, when whatever conditions determined it were right, still more leading to catastrophe?
In spite of these variations from case to case, officials behaved as if they understood it, giving apparently logical arguments to each other often depending on the "success" of previous flights.

 

Richard Feynman

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There was no way, without full understanding, that one could have confidence that conditions the next time might not produce erosion three times more severe than the time before. Nevertheless, officials fooled themselves into thinking they had such understanding and confidence, in spite of the peculiar variations from case to case. A mathematical model was made to calculate erosion. This was a model based not on physical understanding but on empirical curve fitting.

 

Richard Feynman

 

He had dabbled in a thing which he had not understood. And had, furthermore, committed that greater sin of thinking that he did understand. And the fact of the matter was that he had just barely understood enough to make the concept work, but had not understood enough to be aware of its consequences.

 

Clifford D. Simak

 

When a scientist writes about God, his colleagues assume he is either over the hill or going bonkers. In my case it should be understood from the start that I am an agnostic in religious matters. My views on this question are close to those of Darwin, who wrote, "My theology is a simple muddle. I cannot look at the Universe as the result of blind chance, yet I see no evidence of beneficent design in the details."

 

Robert Jastrow

 

When I am without orders and unexpected occurrences arrive I shall always act as I think the honour and glory of my King and Country demand. But in case signals can neither be seen or perfectly understood, no captain can do very wrong if he places his ship alongside that of the enemy.

 

Horatio Nelson

 

Types.—To show that the Old Testament is only figurative, and that the prophets understood by temporal blessings other blessings, this is the proof: First, that this would be unworthy of God. Secondly, that their discourses express very clearly the promise of temporal blessings, and that they say nevertheless that their discourses are obscure, and that their meaning will not be understood. Whence it appears that this secret meaning was not that which they openly expressed, and that consequently they meant to speak of other sacrifices, of another deliverer, etc. They say that they will be understood only in the fullness of time. The third proof is that their discourses are contradictory, and neutralize each other; so that if we think that they did not mean by the words "law" and "sacrifice" anything else than that of Moses, there is a plain and gross contradiction. Therefore they meant something else, sometimes contradicting themselves in the same chapter. 658

 

Blaise Pascal