Attention wandering

Line up on lecture notes ...
"In 1857  ..."
Heat increases.
Beans on toast and a refreshing cup of ...
"Fully intended to include this important concept.
Plato is interesting as ..."
When I rose, I wasn't as tired as this, was !?
"As we can see from the following extract ..."
Aah, a rest.
Time to think of just twelve and a half minutes more
Then home for my tea at the end of this bore.

(Written long ago in an undergraduate lecture)