Yes. The lawyer was walking on air when he got back to the office to tell about it.

If I may digress into a personal story, somewhat pre-Unix. (I was nine years old.)  I remember my father showing exactly the same excitement when he returned from testifying as an expert witness for the plaintiff in a near-electrocution case that left the victim paralyzed. A visitor touring a substation had pointed to something to ask what it was, and got hit with a 33,000-volt arc. The defense lawyer tried to discredit the expert, a professor who formerly had been an electrical engineer for a utility company.

Lawyer: Have you ever designed a 33,000-volt indoor substation?
Prof: I have.
Lawyer, changing tactics after an unexpected answer: Do you recognize this book?
Prof: I do.
Some discussion describing the book, an  inventory of utility facilities, for the benefit of the jury.
Lawyer, with a hint of triumph: The inventory shows that your former employer has no such substation.
Prof: Yes, after a few years we decided it was too dangerous and decommissioned it.
...
Lawyer, showing a photo of the busbar that arced: Wouldn't someone have to stretch unusually high to get near to it?
Prof: No. That picture was taken exactly [some measurement like 2'3"] from the floor.
Lawyer: Do you mean to tell me you know where the picture was taken from, without having been present when it was taken?
Prof, pointing to a blown-up engineering drawing on the courtroom wall: This horizontal pipe is seen end-on in the photo. It  is dimensioned as being 2'3" from the floor.

The plaintiff won.

Doug

On Mon, Mar 18, 2024 at 8:28 AM Dan Cross <crossd@gmail.com> wrote:
On Fri, Mar 15, 2024 at 5:24 PM Douglas McIlroy
<douglas.mcilroy@dartmouth.edu> wrote:
>
> > There was lawyerly concern about the code being stolen.
>
> Not always misplaced. There was a guy in Boston who sold Unix look-alike programs. A quick look at the binary revealed perfect correlation with our C source. Coincidentally, DEC had hired this person as a consultant in connection with cross-licensing negotiations with AT&T. Socializing at the end of a day's negotiations,  our lawyer somehow managed to turn the conversation to software piracy. He discussed  a case he was working on, and happened to have some documents about it in his briefcase. He pulled out a page disassembled binary and a page of source code and showed them to the consultant.
>
> After a little study, the consultant confidently opined that the binary was obviously compiled from that source. "Would it surprise you," the lawyer asked, "if I told you that this is yours and that is ours?" The consultant did not attend the following day's meeting.

Fantastic story, and talk about a true "Perry Mason" moment for the
lawyer. I'm sure it was also fertile material for stories at cocktail
parties for the rest of his days.

        - Dan C.