There are three kinds of people: those who can count, and those who can’t.
Steve
Actually, there are two kinds of people: Those who would divide people into groups and those who won’t.
–Oscar Wilde, I think.
Probably only the engineers will get this one:
There are 10 kinds of people: those who understand binary, and those who don’t.
Bob
Why engineers and not mathematicians or software types?
I do get it. It’s just not funny. (Kidding, I have an exam tomorrow, so anything to do with digital computers isn’t funny right now.)
Is this a rule of thumb?
Steve
I think a rule of thumb is when you can only beat your donkey with a branch of a diameter smaller than your thumb.
That’d would be a rule of 10 (2).
Yes, but in my job, almost all engineers are software engineers, so I’m just used to saying engineer.
I never guaranteed it would be funny. 
Bob
I thought this was hilarious:-)