21 September 2009

On OHTs and other aspects of recent history

OverHead Transparencies/acetates/viewfoils...

From a blog reporting on a current cosmology and philosophy conference;
2:00: We kick off the afternoon with Sir Roger Penrose talking about entropy issues for cosmology. Penrose has enough clout that they have brought out the overhead projector so he can show his famous hand-drawn slides.
And well might they be famous! Do that in PowerPoint! (Yeah, I know you could scan them in, but it's not the same...)

It's just another reminder of rapid change. "University Challenge" this evening seemed to be characterised by many questions which I could answer without thinking, but the student teams could only guess at because they were just beyond their Ken (geddit? If you do, you are almost as old as me). What was the next in order?
"penny, threepence, sixpence, shilling, florin..."
 A farthing, guessed one team. A crown, hazarded the other. (It's a half-crown, a.k.a. two-and-six in the prelapsarian days before 15 February 1971) How could they not know that? Because they would not be born for fifteen years or so! But they did get Khruschev as the guy who banged his shoe on the podium at the UN.

The point? Embarrassingly I can't find the reference (if I do, I'll come back and edit the post). An academic in the States has published a warning list of allusions faculty might commonly make in lectures which will mean absolutely nothing to their students (except to show how out-of-date their professors are).


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