Originally Posted by
Interflug
and then, OF COURSE, the idiotic press en suite, reiterating the fallacy as if it were fact.
You need to re-read your sources. The "fact" that the press are reporting is simply that the Malaysian PM has made an announcement to that effect.
This (from the same link that you quoted) doesn't sound like unquestioning acceptance to me:
According to the French prosecutor in Paris, the investigators’ conclusion remains only a “very strong presumption” based on Boeing’s confirmation that it was a 777, and “specific technical characteristics” communicated by the Malaysian Airlines engineers in Kuala Lumpur.
That seems to suggest no definitive serial numbers have been immediately found on the part, but it could potentially mean that some part of the maintenance regime over its years of service have left an identifying mark.