Good grief, Li-Ion is almost ancient tech. Teething problems, yes. Sony built 10,000,000 batteries for computers that were recalled 5 years ago. Melted computers were all over the news (Sony supplied to makers like Dell in addition to their own). I wouldn't be typing on this iPad if not for Li-Ion, nor my 3 laptops nor 2 iPhones nor 4 cameras nor 2 drills. So it is not something new and untested. Do we blame the problem on Thales since they are he supplier and since they supplied the pitot tube on AF447 they can't be trusted? Is it a French conspiracy to take down Boeing? Since it was a Japanese subcontractor supplying to Thales that built the battery are they getting back for WWII and the a-bomb? Or is it that we engineers putting together our failure mode and effects analysis had an "I can't believe we missed that!" Moment? We engineers, being all too human, screw up. It's always been a fact of life - people do stupid things. Analyze, learn, resolve, implement, verify, and go on thankful nobody lost their life. Sometimes we are lucky - the engine explosion virtually destroying the A380 wing ended without loss of life by a miracle. Maybe the ANA pilot Thursday performed a similar miracle. Pilots saving our engineering asses. Thank you very much!