I was hoping no-one would notice that.
It is probably more of a demonstration that signals are likely to stray from one part of a circuit to another.
Good, I was afraid of possibly yet another up-braiding today, :-).
Yeah, RF is RF. This is one good reason to keep input lines terminated, and also use low
values Rs [impedances] in a digital ckt. Eg, < 10K rather than 50K - 100K. The latter are
about as good as tying an antenna to an input pin. Using ground planes under high-speed
digital circuitry is a good idea. I always use a ground "island" wrapped around the crystal
circuitry, as that is usually the highest frequency on most embedded controller boards.