The prevalence of more significant issues, such as a battery fire, is in the same order of magnitude as previous programs, he added. "There's no metrics that are screaming at me that we've got a problem."
I have read & re-read this many times and I have NO IDEA what he is trying to say.
"Prevalence" =
commonness, frequency, regularity, currency, universality, ubiquity, common occurrence, pervasiveness, extensiveness, widespread presence, rampancy, rifeness, profusion, predominance, hold, rule, sway, mastery, primacy, ascendancy, preponderance, popularity
Now, forgetting for the moment engine-related issues, because those are not in the control of an airframer, I cannot remember any previous Boeing programme that has had such serious "issues" as this one.
Right at this moment I would walk rather than risk being on board a 787 in flight.
And STILL no-one can indicate to me exactly how this aircraft can qualify under ETOPS...
Disclaimer, not a pilot, no aptitude.