I'm not qualified to comment on most of this so I won't. The only relevant matter I know quite a bit about is the Lockerbie trial evidence.
I did originally try to stick to the term "explosive device" rather than "bomb" because one thing that JBS' may be correct about is that there are some big questions about the exact nature of the explosive device that did bring down PA 103.
However, I for one am convinced that PA 103 was intentionally destroyed - although I'm not convinced that the trial at Camp Zeist conclusively established how and by who.