On Analysis 2 Thiokol

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in 1985 (April, August) and temperatures had been OK. NASA never paid much attention to the O-ring issue. Forecast for Januany 28, 1986, was: 18 F (- 8 C). Last minute meeting NASA-THIOKOL. (Manufacturer has veto power) Decision was made on Jan 27, at 11:15 pm. THIOKOL was pressured by NASA (its main client). "There was significant concern with giving NASA what NASA wanted, just as NASA representatives perceived pressure to launch." DECISION ANALYSIS PRESIDENTIAL COMMISION REPORT ON THE CHALLENGER ACCIDENT "There was a serious flaw in the decision making process." What was this serious flaw? DECISION ANALYSIS 3 1. When we are interested in one alternative we tend to listen to reasons in favor, but disregard arguments agaON ANALYSIS 2 THIOKOL engineers had warned about launching under 53 F (12 C) since January 1985. NASA had launched other missions in 1985 (April, August) and temperatures had been OK. NASA never paid much attention to the O-ring issue. Forecast for Januany 28, 1986, was: 18 F (- 8 C). Last minute meeting NASA-THIOKOL. (Manufacturer has veto power) Decision was made on Jan 27, at 11:15 pm. THIOKOL was pressured by NASA (its main client). "There was significant concern with giving NASA what NASA wanted, just as NASA representatives perceived pressure to launch." DECISION ANALYSIS PRESIDENTIAL COMMISION REPORT ON THE CHALLENGER ACCIDENT "There was a serious flaw in the decision making process." What was this serious flaw? DECISION ANALYSIS 3 1. When we are interested in one alternative we tend to listen to reasons in favor, but disregard arguments against it. has an effect of self-confirming our hypothesis; creates an early attachment to our own alternatives; precludes searching for new information, or giving new information the weight it deserves. RECO