And what do you do?

Overheard in the office:

"What does your software do?"
"It's a management information system."
"Ah, I SEE."

[a few minutes later]

"Basically what we produce is a technology-based learning solution."
[Everybody nods sagely.]

Mac to square one

Gaaahhhh. I can't run BootX on the G3. It says the application is a document, and it doesn't know what created it. I'm not doing anything weird to it: I'm just copying it from one Mac to another, via a USB stick. If I binhex the app (or even the whole folder) first, I can't unpack it at the other end. Stuffit Expander turns BootX.hqx into Archive.sitx, and then tells me that Archive.sitx isn't compressed or encoded and it can't do anything with it.

ETA: Installed a new version of Stuffit on the G3, had another go at unpacking the .sitx.hqx, and got an Error #17540 (format error). Some very brief and tired Googling suggests that this is Stuffitese for "SNAFU". I tried running the BootX app (which seemed to have been unpacked despite the error) but that gave an error of type -39 (eofErr), so obviously didn't unpack properly.

I mean, look, be honest here, am I just being dim?

I have already set a possible Plan B (the "acquire more tractable hardware" plan) in motion, but I am going to be mightily pissed off if it turns out that the G3 is more stubborn than I am. Or cleverer.