Are we meant to infer anything by the stacking order, Howard? 
Nope, that was logistical, i.e., what balanced on what without toppling over.
I did grimace when a student asked me where the auto setup button was. So I let him press it.... and it made a complete pigs ear of it, picking up some high frequency RF instead of the modem-speed stuff we were after, so I let him play around for a minute or two trying to make sense of it. After letting him suffer, I offered my help a short while after, and in under 5s I'd got a sensible trace. ;-)
A few stories like that came out, like I could look at a trace and could immediately say what was wrong with the software modems on a few occasions, down to within a line or two of code. I think they thought I was getting some kind of paranormal aid, but it's far more mundane than that, just a reasonable amount of experience, and, something you can't teach in front of a chalkboard, analytical skills picked up over decades of doing.
On the other side of the coin, these bloody youngsters are far faster than I am picking up something new.