31.   Engineers believe power was flowing from the platform to the arm as intended, but a software glitch prevented confirmation of this.

32.   Engineers believe age contributed to the problem.

33.   Engineers believe an air bubble became trapped in a critical hydraulic line.

34.   Engineers believe the deadly collapse of a concrete terrace at a winery on a Lake Erie island was caused by a structural problem, not an overload of people.

35.   Engineers believe the magnets may have moved slightly.

36.   Engineers now believe they know what caused the problem -- a radiation-damaged memory chip.

37.   Mission operations director Randy Stone said National Aeronautics and Space Administration engineers believe the leaking nitrogen tetroxide would not attach to anything and poses no danger.

38.   NASA engineers believe the blankets will eliminate power spikes the motors have experienced recently, which have caused some stalls.

39.   NASA engineers believe the blankets will eliminate power spikes the motors have experienced recently, causing some stalls.

40.   Some engineers do not believe VeriSign should have proceeded until standards emerge, possibly next year.