Hmmmm... I like what you say in general, but I have to complain about your treatment of women in your anecdote. I'm not sure if you realize the condescending treatment of "George's girlfriend".

1. She is only known by her relationship to George. She could have been referred to as a team member with a name, say Anna. You might as well have called her "the missus", or "the little lady."
2. She "knew enough" to code and debug the programs. Like once you have written the algorithm the code practically writes itself. Only if you are a brilliant programmer, perhaps. There are lots of issues after the design stage - what language to implement the algorithm it, getting it to actually work, etc.
3. Why did you have to explain her credentials at all? You didn't mention that George was a senior Math major and that is why he was a brilliant algorithmist.

I'm pretty sure you didn't mean any harm, of course, but I thought I should point this out nevertheless.