I have never said the mentioning of the catapults was an intended part of the lecture. I agree 100% that it must be an off the cuff question. My point was focused on the uniform part of the lecture. And I have insisted that any individual who is giving a lecture involving uniforms should not have the qualification to make comments on catapults, hence the comment about the errand boy. Keep in mind what I said about lectures typically having a theme. You have an hour to wow your audience. No one wants to waste time on non-essential stuff. So it is most likely that his whole lecture has something to do with uniforms. This is also why I suspect that he is a PLAN recruiter.
I can agree with the idea that he may be part of a recruiting drive or perhaps some kind of "intro to the Navy" kind of lecture, where I'm sure the configuration of the Navy's uniform may be a couple of slides but where the overall lecture is more broad about the Navy.
In univeristy/college courses it's very common to have guest lecturers or speakers who are very knowledgeable and specialized to give presentations about their field that are quite simple in nature, to students who are new to the field.
As taxiya mentioned, the guy appears to be an O-4. It's not a super high rank of course, but it's still a respectable officer rank. And he's speaking at a maritime engineering university, and we know his presentation happened to include a bit about uniforms. Does that give us enough information to judge whether he's very credible or very non-credible? I'd argue now.
He might be a public relations/recruiting guy only, and maybe his entire presentation was only basic and only about recruiting. Or maybe he might be someone working under Rear Admiral Ma with awareness about the catapult situation for 002 and the slide we saw about uniforms was only at the beginning of his presentation about the basics of the Navy and the rest of the presentation was about other things which are actually related to the relationship between maritime design institutes and the Navy.
Or it could be anything between that.
In other words, we should be careful to not take a single slide/instance of a presentation to make an assumption about what the whole presentation was about, and we should also not take the contents of a single presentation and assume that the limit of the knowledge/credibility of the person giving the presentationis only limited to the presentation that he gave.
I agree that comment of mine is a bit far-fetched since his commanding officer would not have anticipated a question on the new catapults, hence very little chance of "ordering" him to give certain answer.
I do however believe that his answer was simply his own guess. The kind of job that this officer is doing does not suggest that he would have the clearance to know the details of China's latest CV construction. Like I said before, it is of my opinion that this guy is a recruiter on a routine on-site recruiting job. And he blabbered something that he has no idea about.
I agree that it's possible that he blabbered something that he has no concrete idea about, or perhaps that his source of the information is not as accurate (i.e.: he is confident in his answer but the basis for his answer is unreliable, but he doesn't know that).
However, the fact that there happens to be a slide about uniforms in his overall presentation is no reason to be skeptical. We do not know even know what his actual presentation was about, let alone what his role is, what his knowledge is, what his credibility is.
Instead, the reason to be skeptical should be a result of natural vigilance that we as PLA watchers should have towards these things.